Carman, J.S., ed. Varon, B., ed
Obstacles to mineral development - Oxford Pergamon Press 1979 - xiv, 178p. - Pergamon policy .
ECONOMICS
MINING & MINERALS
338:622 / C3
Obstacles to mineral development - Oxford Pergamon Press 1979 - xiv, 178p. - Pergamon policy .
ECONOMICS
MINING & MINERALS
338:622 / C3