For citations:

Timofeev D.A. ON THE PREPARATION OF THE NINTH PLENARY- SESSION OF THE GEOMORPHOLOGICAL COMMISSION OF THE ACADEMY OF SCIENCES OF THE USSR, DEVOTED TO THE PROBLEMS OF PLANATION SURFACES. Geomorfologiya. 1970;(1):101. (In Russ.) https://doi.org/10.15356/0435-4281-1970-1-101