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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. Res. (USA). no. 84-3 (1984)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. Res. (USA). no. 84-4 (1984)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. Res. (USA). no. 84-2 (1984)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. Res. (USA). no. 82-39 (1982)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. Res. (USA). no. 82-44 (1982)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. res. (USA). no. 80-3 (1980)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. res. (USA). no. 80-18 (1980)

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Published in Cornell University. College of Agriculture. Dept. of Agricultural Economics. A.E. res (USA). no. 80-10 (1980)

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