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1Published in School Science and Mathematics (1918)Get access
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2
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3Published in School Science and Mathematics (1912)Get access
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4Published in School Science and Mathematics (1912)Get access
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5Published in School Science and Mathematics (1962)Get access
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6Published in School Science and Mathematics (1920)Get access
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7Published in School Science and Mathematics (1957)Get access
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8Published in School Science and Mathematics (1938)Get access
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9Published in School Science and Mathematics (1911)Get access
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10Published in School Science and Mathematics (1950)Get access
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11Published in School Science and Mathematics (1982)Get access
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12Published in School Science and Mathematics (1965)Get access
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13Published in School Science and Mathematics (1961)Get access
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14Published in School Science and Mathematics (1971)Get access
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15Published in School Science and Mathematics (1968)Get access
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16Published in School Science and Mathematics (1958)Get access
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17Published in School Science and Mathematics (1959)Get access
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18Published in School Science and Mathematics (1966)Get access
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19Published in School Science and Mathematics (1911)Get access
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20Published in School Science and Mathematics (1936)Get access
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