TY  - BOOK
AU  - Romanoff, Alexis Lawrence,
TI  - Pathogenesis of the avian embryo: an analysis of causes of malformations and prenatal death 
SN  - 0471732400
U1  - 598 
PY  - 1972///
CY  - New York
PB  - Wiley-Interscience
KW  - Birds
ER  -