TY - JFULL ID - 5462603 TI - Revista Catalana d'Ornitologia. PY - 1981 SN - 16974697 PB - Barcelona Institut Català d'Ornitologia DB - UniCat KW - Birds KW - Ornithology KW - Birds. KW - Ornithology. KW - Migration KW - Migration. KW - Spain. KW - Periodicals KW - 59 KW - 598.2 KW - 598.2 Aves. Birds in general. Ornithology KW - Aves. Birds in general. Ornithology KW - Zoölogie. Dierkunde KW - Zoology KW - 59 Zoölogie. Dierkunde KW - 59 Zoology UR - https://www.unicat.be/uniCat?func=search&query=sysid:5462603 AB - ER -