  1991 - Noxious Range Weeds [Westview Special Studies in Agriculture Science and Policy] (Paperback) ISBN-13: 9780813383958 ISBN-10: 0813383951 ?  1987 - The Ecology and Economic Impact of Poisonous Plants on Livestock Production [Westview Special Studies in Agriculture Science and Policy] (Paperback) ISBN-13: 9780813374536 ISBN-10: 0813374537 ? |
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