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., ... (...)

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G. Zulauf & J. Zulauf & O. Bornemann & F.E. Brenker (...)

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И. А. КРУПЕНИКОВ

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Jill McCoy

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