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1by Kramer, Stephen P.Subjects: “...Science Methodology Juvenile literature....”
Published 1987
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12by Killeffer, David H. (David Herbert), 1895-1970Subjects: “...Science Methodology....”
Published 1969
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15by Medawar, P. B. (Peter Brian), 1915-1987Subjects: “...Science Methodology....”
Published 1969
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