TY  - BOOK
AU  - Mayr, Ernst , 1904-
ED  - 
TI  - The species problem ; a symposium presented at the Atlanta meeting of the American Association for the Advancement of Science , December 28 - 29 , 1955
AV  - QH83.A73 1955 
CY  - Washington
KW  - Species -- Congresses
KW  - QH
N1  - Includes bibliographies
ER  -