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Filtering by: Publisher Corvallis, OR : Cooperative Extension work in Agriculture and Home Economics, Oregon State College and U.S. Dept. of Agriculture cooperating, Dept. of Agri. Eng. Remove constraint Publisher: Corvallis, OR : Cooperative Extension work in Agriculture and Home Economics, Oregon State College and U.S. Dept. of Agriculture cooperating, Dept. of Agri. Eng. Non-Academic Affiliation Oregon State University. Agricultural Experiment Station Remove constraint Non-Academic Affiliation: Oregon State University. Agricultural Experiment Station Subject Cattle guards -- Design and construction Remove constraint Subject: Cattle guards -- Design and construction

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