TY  - BOOK
AU  - Ralph,C.John
AU  - Scott,J.Michael
TI  - Estimating numbers of terrestrial birds
T2  - Studies in avian biology
U1  - 598.07232 23
PY  - 1981///
CY  - [Los Angeles]
PB  - Cooper Ornithological Society
KW  - Birds
KW  - Aves
N1  - Bibliografía : p. 591-630
ER  -