TY  - GEN
AU  - Perrins, Christopher M.
AU  - Elphick, Jonathan 
TI  - The complete encyclopedia of birds and bird migration 
SN  - 0785816674
U1  - 598 
PY  - 1990///
CY  - New Jersey
PB  - Chartwell Book
KW  - Aves(Birds)
KW  - Animals
ER  -