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1Published 1956Subjects: “...Science....”
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2Published 1955Subjects: “...Science....”
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3Published 1958Subjects: “...Science....”
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4Published 1953Subjects: “...Science Study and teaching....”
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5Published 1954Subjects: “...Science Study and teaching....”
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6Published 1957Subjects: “...Science Study and teaching....”
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7Published 1960Subjects: “...National Science Foundation (U.S.)...”
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8Published 1962Subjects: “...National Science Foundation (U.S.)...”
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9Published 1965Subjects: “...National Science Foundation (U.S.)...”
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10Published 1965Subjects: “...National Science Foundation (U.S.)...”
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11Published 1966Subjects: “...National Science Foundation (U.S.)...”
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