Geology, Economic

Hurlbut, Cornelius S.

Geology, Economic Earth sciences Gems

how I discovered new principles in the working of nature

by Viktor Schauberger; transl. & ed. by Callum Coats

Geology, Economic Water--Resources development

matières premières - un bien commun limité

collectif sous la direction de Gérard Sustrac

Earth sciences Geology, Economic Mineralogy