Brown, Lester R.
Food or fuel : new competition for the world's cropland - Washington Worldwatch Inst. 1980 - 43p. - Worldwatch paper No.35 .
662.756 / B7
Food or fuel : new competition for the world's cropland - Washington Worldwatch Inst. 1980 - 43p. - Worldwatch paper No.35 .
662.756 / B7