Йоахим Опперман & В.Ф. Полежаева

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Ralph M. Feather Jr., PhD, Assistant Professor Geoscience Department ... & Susan Leach Snyder, Retired Teacher, Consultant Jones Middle ... & Dinah Zike, Educational Consultant Dinah-Might Activities, Inc., ... (...)

Lithology (1)

R.F. Flint & И. И. Спасская & А. К. Агаджанян & К. К. Марков (...)

Палеонтология (1)

Francois Boudou & Yves Le Stunff & Jean Arnaud & Pierre Esquier (...)

Геоморфология (1)