Kenneth P. Able(1)
Carlos H. Aguilar(1)
Evelio Alfaro Vindas(1)
William Allen(1)
Guillermo Alvarado(1)
Wille Trejos, Alvaro(1)
George R Angehr(1)
Antoine de Saint-Exupéry(1)
Luis González Arce(1)
Laurel Aziz(1)
Richard Bach(1)
Christopher P. Baker(2)
Christopher P. Baker(1)
Les Beletsky(1)
Fred Berry(1)
Steve Bird(1)
Ana María Botey(1)
M. J. Bourne(1)
Mario A Boza(1)
Gail Brenner(1)
David Brewer(1)
Edward S. Brinkley(1)
Dan Brown(6)
Bill Bryson(1)
Geoffrey Budworth(1)
David Burnie(1)
William A. Bussing(1)
Carolina Godoy Cabrera(1)
Juan Rafael Quesada Camacho(1)
Archie Fairly Carr(3)
Carlos Castaneda(1)
Catherine Caufield(1)
Federico Munoz and Richard Dennis Johnston Chacon(1)
Isidro Chacón(1)
Edward L. Chalif(1)
Jolan Chang(1)
Robert L. Chapman(1)
chavarriaulises(1)
choudhuryshamilla(1)
Peter Clement(1)
Anthony G. Coates(1)
Brett Cole(1)
Darryl Cole-Christensen(1)
Sneed B. Collard(1)
Richard Condit(1)
Fernando Contreras Castro(1)
Gordon Courtright(1)
Stephen R. Covey(2)
Marty Crump(1)
Charles Darwin(1)
Genna Marie Davis(1)
Richard Dawkins(1)
Thomas Richard Defler(1)
Richard M. DeGraaf(1)
Percy Denyer(1)
Bernard Devaux(1)
Philip J DeVries(1)
Charles Dickens(1)
Carl Dreizler(1)
Robert L. Dressler(1)
Charles Duhigg(1)
Pete Dunne(1)
Jon L. Dunn(1)
Editorial América(1)
Carrillo, Eduardo.(1)
Lynn Case Ekfelt(1)
Louise H. Emmons(1)
Armando Estrada(1)
Jack Ewing(2)
Amelie Faliere(1)
James Ferguson-Lees(1)
Patricia Fernández Esquivel(2)
Patricia Fernández(1)
Luis Ferrero(1)
Astrid Fischel Volio(1)
Theodore H. Fleming(1)
Rainer F. Foelix(1)
Michael Patricia; Fogden Fogden(1)
Susan C. L. Fogden(1)
Pieter A. Folkens(1)
forbess(1)
Joseph Michael Forshaw(1)
Adrian Forsyth(4)
Peter Frances(1)
Jaime Gamboa(1)
Margaret Gargiullo(1)
Orlando H. Garrido(2)
Richard Garrigues(4)
Ginger Garrison(1)
Alwyn H. Gentry(1)
Kahlil Gibran(1)
Jose Gonzalez(1)
Douglas Goodell(1)
Mark Richard Goode(1)
Deborah Gordon(1)
Harry W. Greene(1)
Donald R. Griffin(1)
Manuel R. Guariguata(1)
Gustavo Vargas Rojas(1)
Craig Guyer(1)
William A. Haber(1)
Barry Edward Hammel(1)
Paul Hanson(1)
Paul E. Hanson(1)
Patrick Harmon(1)
Peter Harrison(1)
Paul Hawken(2)
Peter Hayman(1)
Andrew Henderson(1)
Carrol L. Henderson(1)
Wilberth Herrera(1)
V. H. Heywood(1)
Luko Hilje Q.(1)
Steven L. Hilty(1)
Christopher Hitchens(2)
Bert Hölldobler(3)
L. R. Holdridge(3)
Homer(1)
Gustavo Hormiga(1)
John Howells(1)
Steve N. G. Howell(1)
Daniel H. Janzen(1)
J. Francisco Morales(4)
Jorge A. Jiménez(1)
Paul A. Johnsgard(1)
Frederic Rosengarten Jr(1)
Maarten Kappelle(3)
Stephen King(7)
Jeff Kinney(7)
Dan Koeppel(1)
Könemann(1)
Claus König(1)
Elizabeth Kostova(1)
Jane Koutnik(1)
John C. Kricher(2)
Ricardo Kriebel Haehner(1)
Donald E. Kroodsma(1)
Alejandro Solorzano L.(1)
Marco Lambertini(1)
Trond Larsen(1)
Richar K. LaVal(1)
Twan Leenders(3)
Harry G. Lefever(1)
Jorge León(1)
Agnès Levécot(1)
Herbert Walter Levi(1)
Jerry Liguori(1)
Jorge Lobo(1)
Irby Lovette(1)
madrigalquiricojimen(1)
María Alejandra Maglianesi(1)
Juan Gabriel Martínez(1)
Milagro Mata(2)
David McCullough(2)
Lucinda A. McDade(1)
Joe E. Meisel(1)
Ivan Molina(1)
Steven J. Molinsky(1)
Mara Montero(2)
Mayra Montiel(1)
Sergio Mora Castro(1)
José Manuel Mora(1)
Robbin Craig Moran(1)
Priscilla Molina Munoz(1)
Nalini Nadkarni(1)
Piotr Naskrecki(1)
Tony Northrup(1)
nunezjorgecortes(1)
Pedro Nunez(1)
Oberon(1)
Clotilde María Obregón(1)
Tobías Meza Ocampo(1)
Osho(1)
Christopher O'Toole(1)
Jennifer Owen(1)
Adelaida Chaverri P.(1)
Paula Palmer(1)
Steven Palmer(1)
Dennis Paulson(2)
perezjuliosanchez(1)
Ber van Perlo(1)
Donald Perry(1)
Roger A. Petersen(1)
Yolanda Pettinato(1)
Edgar Allan Poe(2)
Juan Jose Pucci(2)
Francisco J. Quesada Quesada(1)
Rob Rachowiecki(1)
ramirezluisramirez(1)
Barbara Ras(1)
Piers Paul Read(1)
Paul Reddish(1)
Martin J. Rees(1)
Fiona Reid(1)
Fiona A. Reid(2)
Robin Restall(1)
Robert S. Ridgely(1)
Jeff Ripple(1)
Barry Chernoff(1)
Hernán Rodríguez Navas(1)
Jens G. Rohwer(1)
rosacarlosleonardode(1)
Sara Rose(1)
Marta Rivas Rossi(2)
Luciano Capelli Yazmin Ross(1)
Yazmin Ross(1)
David W. Roubik(1)
Norah Rudin(1)
Sharman Apt Russell(1)
Michael J. Ryan(1)
Miguel de Cervantes(1)
saenzjoelc(1)
Carl Sagan(2)
Rodrigo Salazar Salvatierra(1)
Marcia Baraona Ellen Sancho(1)
Jay M. Savage(1)
Scholastic(1)
Thomas S. Schulenberg(1)
Richard Evans Schultes(1)
Aaron D. Sckerak(1)
S.A. Seddon(1)
Robin Sharma(1)
Payson D. Sheets(1)
Alberto Sibaja Alvarez(1)
David Sibley(5)
Alexander F. Skutch(7)
Luis Eduardo Sierra S.(1)
Thomas M. Smith(1)
National Audubon Society(1)
National Geographic Society(2)
Royal Horticultural Society(1)
Eldra P. Solomon(1)
Angel Solís(1)
William T. Stearn(1)
Jim Stevenson(1)
F. Gary Stiles(3)
Bram Stoker(1)
Donald W. Stokes(1)
Frank Suarez(1)
Jorge Pardo Tassies(1)
Stan Tekiela(3)
J. R. R. Tolkien(3)
Lao Tzu(2)
ufranciscocorrales(1)
ugaldejesusa(1)
Loengrin Umaña(1)
Unknown(1)
Mike Unwin(1)
Carlos E. Valerio(2)
Andrew Vallely(1)
Armando Vargas Araya(1)
Pablo Enrique Sǹchez Vindas(1)
Varios Autores(1)
Mark Wainwright(1)
Gilbert Waldbauer(2)
David Rains Wallace(1)
Anton Weber(1)
Yeow Chin Wee(1)
Judy White(1)
Edward O. Wilson(4)
Peter Wohlleben(1)
Rodney Yee(1)
Nelson Zamora Villalobos(1)
Christian Ziegler(1)
Herbert Spencer Zim(1)
Willow Zuchowski(2)
zumbadomanuel(1)
n a(1)