प्रस्तावित विषय : खोज निहित
प्रस्तावित विषय : खोज निहित
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1प्रकाशित 1949Chicago : Institute for Research, c1949.24 p. : ill. ; 28 cm.
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2प्रकाशित 1941Chicago : Institute for Research, c1941.[22] p. : ill. ; 28 cm.
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3प्रकाशित 1950Chicago : Institute for Reasearch, c1950.20 p. illus. 28 cm.
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4प्रकाशित 1941Chicago : Institute for Research Devoted to Vocational Research, c1941.[20] p. : ill. ; 28 cm.
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5प्रकाशित 1936Chicago : The Institute for Research, c1936.[20] p. : ill. ; 28 cm.