TY  - GEN
AU  - Tinbergen, N.
AU  - Broekhuysen, G.
AU  - Feekes, F.
AU  - Houghton, J.
AU  - Kruuk, H.
TI  - Egg shell removal by the black-headed gull, larus ridibundus l
KW  - Etologia
KW  - 2400 - Psicologia Experimental Animal / Psicologia Comparativa
UR  - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/et.htm
ER  -