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1Published 1979Subjects: “...Education Experimental methods....”
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10by Peters, Charles C. (Charles Clinton), 1881-1973Subjects: “...Education Experimental methods....”
Published 1948
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15by Rugg, Harold Ordway, 1886-1960Subjects: “...Education Experimental methods....”
Published 1928
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16by Rugg, Harold Ordway, 1886-1960Subjects: “...Education Experimental methods....”
Published 1969
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17by Washburne, Carleton, 1889-1968Subjects: “...Education Experimental methods....”
Published 1926
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18by MacConnell, Charles Marshall, 1891-Subjects: “...Education Experimental methods....”
Published 1953
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