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Suggested Topics within your search.
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1Published 1961Boulder : Biological Sciences Curriculum Study, Univ. of Colorado, c1961-62.9 v. illus. 28 cm.
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2Published 1960Boulder, Colo. : University of Colorado, c1960-c1961.9 v. : ill. ; 28 cm.
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3Published 1973New York : Harcourt Brace Jovanovich, [c1973]xvi, 912 p. : ill. ; 25 cm. & teacher's manual.
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4Published 1961Boulder, Colo. : Biological Sciences Curriculum Study, Univ. of Colorado, c1961-62.9 v. illus. 28 cm.
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5Published 1964Chicago : Rand McNally, c1964.320 p. : ill. (some col.) ; 24 cm.
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6Published 1973New York : Harcourt Brace Jovanovich, [c1973]xvi, 912 p. : ill. ; 25 cm. & teacher's manual.
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7Published 1982Boston : Houghton Mifflin, [c1982]800 [i.e. ca. 900] p. : ill. (part col.) ; 24 cm. + Answer key to progress tests.
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8Published 1960Boulder, Colo. : University of Colorado, c1960-c1961.9 v. : ill. ; 28 cm.
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9Published 1975New York : Holt, Rinehart and Winston, c1975.viii, 328 p. : ill. ; 28 cm. + teacher's guide.
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10Published 1968New York, Harcourt, Brace & World [c1968]xviii, 840 p. illus. (part col.) 24 cm.
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11Published 1963Boston, Heath, 1963.133 p. illus. 28 cm.
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12Published 1960Boulder, Colo. : University of Colorado, c1960-c1961.9 v. : ill. ; 28 cm.