A theory of earth's origin : four lectures /
Oto Schmidt, translated from Russian by George H. Hanna
- 3rd ed.
- Moscow : Foreign Languages Pub. House, 1958
- 138 p. : ill., charts ; 20 cm.
Original title " Chetyre Lektsii O teorii proiskhozhdeniia Zemli" Translation of: Chetyre lektsii o teroii proiskhozhdemii a zemli