The Oldest microfossils of the Precambrian of South Africa and North America-The comparative investigation in Thin Sectons and preparations.
Reference:
Lopukhin,A.S. et al. (1979)
The Oldest microfossils of the Precambrian of South Africa and North America-The comparative investigation in Thin Sectons and preparations. Fourth International Palynology Conference, Lucknow, 1976-1977, Proceedings
Vol. 2 P. 98- 103