Speaker's guide:  hints, suggestions and instructions to speakers at symposia and congresses of the Geological Society of South Africa.  Prepared by I.C. Rust and C.F. Vermaak
Contributors: Rust, I.C.; Vermaak, C.F.
Publisher: Geological Society of South Africa
Place of publication: Johannesburg
Language: eng
Number of pages: 16
Subjects: Geology - Addresses, essays, lectures
Notes: 11