Final report of the regional IGCP meeting for south Asia
/ ()
The Use of Shemshak phosphate rocks or the manufacture of phosphatic fertilizers
/ ()
Thermal springs around the quaternary volkano Ankaratra, Madagascar
/ A. Minissal...[ et al.](Minissal, A.)
The Origin of the Zagros defiles
/ By T. M. Oberlander()
Reort of investigation of heavy media concentration of Elburz devonian phosphate
/ By Geoge Alctan()