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Vol. 51—1997 - NorthEastern Weed Science Society

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REFERENCES<br />

1. Agricultural Resources, Inputs, Situation and Outlook. USDA, Economic Research Service,<br />

AR-15, August 1989.<br />

2. Matthews, L.~. 1981. The status of weed science development at country level. Honorary<br />

Member Award presentation, <strong>Weed</strong> <strong>Science</strong> <strong>Society</strong> of America, Las Vegas, Nevada.<br />

3. Osteen, C. D. rand P. I. Szmedra. 1989. Agricultural pesticide use trends and policy issues.<br />

USDA Economic Research Service, Ag. Econ. Rept. No. 622.<br />

4. Pesticide Industry Sales and Usage, 1984 Market Estimates. U.S. E.P.A., Economic Analysis<br />

Branch, Sept9mber 1985.<br />

5. Pesticide Industry Sales and Usage, 1988 Market Estimates. U.S. E.P.A. Economic Analysis<br />

Branch, December 1989.<br />

6. Pesticide Industry Sales and Usage, 1992 and 1993 Market Estimates. U.S. E.P.A. Economic<br />

Analysis Branch, June 1994.<br />

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