TY  - BOOK
AU  - Puigcerver,M.
AU  - Rodriguez-Teijeiro, J.D.
TI  - Relationships between some activity variables and census in the black-headed gull (Larus ridibundus) in regard to certain meteorological parameters
PY  - 1984///
KW  - COMPORTAMIENTO: AVES: LARIDAE
ER  -