TY - GEN AU - Spaans, Arie AU - De Wit, Alle AU - Van Vlaardingen, A. TI - Effects of increased population size in herring gulls on breeding sucess and other parameters KW - Etologia KW - 2400 - Psicologia Experimental Animal / Psicologia Comparativa UR - https://catalogo.ispa.pt/opac/biblioteca/localizacao_doc/et.htm ER -