TY  - BOOK
AU  - Hey, Jody
TI  - Genes, categories, and species : the evolutionary and cognitive causes of the species problem
SN  - 9780195144772
SN  - 45655
U1  - 576.86 HEY 
PY  - 2001///
CY  - Oxford
PB  - Oxford University Press
KW  - Species
N1  - Includes bibliographical references (p. 195-211)
ER  -