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Authors United States. Dept. of Agriculture. Economic Research Service. Remove constraint United States. Dept. of Agriculture. Economic Research Service.: United States. Dept. of Agriculture. Economic Research Service. Authors Christensen, L. A. (Lee A.), 1938 Remove constraint Christensen, L. A. (Lee A.), 1938: Christensen, L. A. (Lee A.), 1938

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1. A comparison of tillage systems : for reducing soil erosion and water pollution

Author:: Christensen, L. A. (Lee A.), 1938 , Norris, Patricia E. , United States. Dept. of Agriculture. Economic Research Service.
Subject:: Tillage -- United States. , Soil conservation -- United States. , Water -- Pollution -- United States.
Physical description:: iv, 27 p.
Collection:: Rural Development Publications Collection
Series:: Agricultural economic report
Part Of:: Agricultural economic report

2. Environmental concerns associated with livestock, dairy, and poultry production

Alternative Title:: Issues for the 1990's, environment.
Author:: Christensen, L. A. (Lee A.), 1938 , Krause, Kenneth R., 1934 , United States. Dept. of Agriculture. Economic Research Service.
Subject:: Animal waste -- Environmental aspects -- United States. , Agricultural pollution -- Economic aspects -- United States. , Agricultural pollution -- Law and legislation -- United States. , Nonpoint source pollution -- United States.
Physical description:: 1 sheet (2 p.)
Series:: Agriculture information bulletin.
Part Of:: Issues for the 1990's.