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phy.) 
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(Geology.) bia! 
_ Sampson, H. C., Ph. D., Ohio State University, Columbus, Ohio. a es Se oe 
Van Tuyl, Francis M., Ph. D., Colorado School of Mines, Boulder, Colo. va 
ry ie \(Geology.) moe? "ees 
‘ _ Weber, H. C. P., Ph. D., Westinghouse Electric Co., Pittsubrgh, Pa. Ne 
* in (Chemistry. ) eat ys 
 *Zetek, James, A. M., Box 245, Ancon, Panama Canal Zone. Ca my Meee 
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