Title: Proceedings of the ... Entomological Congress /
Authors: Entomological Society of Southern Africa.
Publisher: The Society,
Year: 1977
Subjects: Insect pests Africa, Southern Congresses.; Entomology Africa, Southern Congresses.; Insect pests Control Africa, Southern Congresses.; Beneficial insects Control Africa, Southern Congresses.; Insect pests Congresses; Entomology Congresses.; Insect pests Control Congresses.; Beneficial insects Congresses.