TY  - BOOK
AU  - Wilkins, John S
TI  - Defining species : a sourcebook from antiquity to today
SN  - 9781433102165
SN  - 200802703
U1  - 578.012 WIL 
PY  - 2009///
CY  - Bern
PB  - Peter Lang
KW  - Species - Philosophy
N1  - Includes bibliographical references and index
ER  -