TY  - BOOK
AU  - Beer, Gavin De.
TI  - Embryos and ancestors
U1  - 591.3 22
PY  - 1958///
CY  - Oxford
PB  - Clarendon
KW  - Embryology
KW  -  Evolution (Biology)
KW  - Biological Evolution.
N1  - includes bibliographical references and index
ER  -