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4
Labor laws and their administration, 1943. Proceedings of t..
United States congressional serial set ; serial set no. 10907;House document / 78th Congress, 2nd session. House ; no. 681
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5
Proceedings of the tenth annual meeting of the Internationa..
United States congressional serial set ; serial set no. 8206;House document / 67th Congress, 4th session. House ; no. 637
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6
Forty-third annual report of the National Advisory Committe..
United States congressional serial set ; serial set no. 12096;Senate document / 85th Congress, 2nd session. Senate ; no. 73
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7
Grass, the Yearbook of Agriculture 1948
United States congressional serial set ; serial set no. 11174;House document / 80th Congress, 1st session. House ; no. 480
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13
Ecology and Management of Cowbirds and Their Hosts
Studies in the Conservation of North American Passerine Bir...