Title: Problema okhorony heolohichnoï spadshchyny Ukraïny /
Authors: Wimbledon, W. A. P.; Herasymenko, N. P.; Ishchenko, A. A.
Publisher: Derz︠h︡. nauk t︠s︡etnr ragioheokhimiï navkolyshnʹoho seredovyshcha NANU,
Year: 1999