А. П. СИЛА

Геология месторождений угля, битуминозных пород и торфа (1)

Stanley N. Davis & Roger J. M. DeWiest

Гидрогеология (1)

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)

John Pojeta, Jr. & Dale A. Springer

Paleontology (1)