TY  - BOOK
AU  - Sandhu, Harjit Singh
TI  - Ecological studies on birds in the vicinity of airfield - Halwara
U1  - T 598.25 S15E 
PY  - 1978///
CY  - Ludhiana
PB  - P. A. U.
KW  - BIRDS -- BEHAVIOR
KW  - AIRPORTS -- BIRDS CONTROL
ER  -