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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

فعّال (مزود البيانات قام بتقديم البيانات الوصفية السنة الماضية)
Journal Article

مقال مجلة

Use of nitrogen-fixing plants to improve and maintain productivity of forest soils  [1979]

Haines, S.G.; DeBell, D.S.;

استعراض النص الكامل

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المجلة
Reprints - United States, Forest Service

معلومات ببليوغرافية

اللغة:
English
النوع:
Conference
في أجريس منذ:
2013
جميع العناوين:
"Use of nitrogen-fixing plants to improve and maintain productivity of forest soils"@eng
مسائل أخرى:
"Reprinted from Proceedings, Impact of Intensive Harvesting on Forest Nutrient Cycling. p. 279-303. Aug 13-16, 1979. Bibliography p. 297-303."
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معلومات ببليوغرافية

اللغة:
English
النوع:
Conference
في أجريس منذ:
2013
جميع العناوين:
"Use of nitrogen-fixing plants to improve and maintain productivity of forest soils"@eng
مسائل أخرى:
"Reprinted from Proceedings, Impact of Intensive Harvesting on Forest Nutrient Cycling. p. 279-303. Aug 13-16, 1979. Bibliography p. 297-303."