by Viktor Vladimirovich Zaĭkov
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Vulkanizm i sulʹfidnye kholmy paleookean...
Mineral commodity report, talc and relat...
Mineralogical investigations on Jhansi p...
The origin of pyrophyllite-rectorite in ...
The development of an unfired pyrophylli...
Geology of the pyrophyllite and diaspore...
Talc, pyrophyllite, and magnesite in Wes...