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3
Yearbook of Agriculture, 1943-1947. Science in farming
United States congressional serial set ; serial set no. 11077;House document / 79th Congress, 2nd session. House ; no. 708
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7
Minerals yearbook, 1938. Compiled under the supervision of ..
United States congressional serial set ; serial set no. 10191;House document / 75th Congress, 2nd session. House ; no. 411
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Renewable and waste-heat utilisation technologies
thermal energy recovery, conversion, upgrading and storage