LEADER 00000nam 2200169 a 4500 001 ora0000007325 003 UkHlHU 007 t 008 991026s1967 000 040 UkHlHU 100 1 Ennionn, E a R. 245 10 Tracks. 260 |bOxford University Press,|c1967. 650 0 Animal ecology. 700 1 Tinbergen, Niko,|d1907-1988. 936 UCS bib. record 946 020 absent -- ISBN check required 946 260 lacks |a 946 300 absent
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