00511nam a2200109Ia 4500008004100000082003500041100007400076245009600150260005200246300001200298650009100310140224s9999    xx            000 0 und d  aTR 620.91:63.002 1977 (047) L7  aU.S.Department of Energy. Division oil Industrial Energy Conservation  aDepartment of energy program and objectives; energy conservation in agricultural production  aSpring fieldbNTIS, U.S.Dept. of Commercec1977  aiv,39p.  aEnergy conservation-United States,Farm produce-United States,Crop yields-United States