1. Phosphorites on the sea floor; origin, composition and distribution
Author: / G.N. Bautrin
Library: Tehran University, technical faculty libraries 1 (Tehran)
Subject: Phosphate rock,Marine mineral resources
Classification :
QE
471
.
15
.
P48B3713
2. Phosphorites on the sea floor; origin, composition and distribution
Author: / G.N. Bautrin
Library: Library of Campus2 Colleges of Engineering of Tehran University (Tehran)
Subject: Phosphate rock,Marine mineral resources
Classification :
QE
471
.
15
.
P48B3713
