TY  - BOOK
AU  - Petrson, Roger Tory
AU  - 
TI  - birds
U1  - 502 
PY  - 1963///
CY  - New York
PB  - Time-Life Books
KW  - Science
KW  - Chemistry
KW  - Pure sciences
KW  - Natural sciences
KW  - Natural history
KW  - Marine biology
KW  - Aquarium
KW  - Life sciences
KW  - Biology
KW  - Animals and plants
KW  - Nature
KW  - Wild life
KW  - Botany
KW  - Zoology
KW  - Birds
N1  -  Life nature library
ER  -