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1
المصدر: CSA News. 66:48-49
مصطلحات موضوعية: General Earth and Planetary Sciences, General Environmental Science
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المؤلفون: Brett Holte, Beth Guertal, Bill Raun, Sue Ernst
المصدر: CSA News. 61:16-20
مصطلحات موضوعية: Impact factor, Agriculture, business.industry, General Earth and Planetary Sciences, Sociology, business, Agricultural economics, General Environmental Science