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Start Over You searched for: Publish Year Decade 1960 - 1969 Remove constraint Publish Year Decade: 1960 - 1969 Sudoc Stem I 28.37/a Remove constraint Sudoc Stem: I 28.37/a

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115. Gem stones; by Benjamin Petkof.

116. Gold; by J. Patrick Ryan.

117. Graphite; by Donald E. Eilertsen.

118. Gypsum; by Paul L. Allsman.

119. Helium; by Edwin M. Thomasson.

120. Iodine; by William C. Miller.