1964Invertebrate Zoology 1964No. of attendees: 2121965Invertebrate Zoology 1965No. of attendees: 2161966Invertebrate Zoology 1966No. of attendees: 2041967Invertebrate Zoology 1967No. of attendees: 2281968Invertebrate Zoology 1968No. of attendees: 216
