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Efficient use of fertilizers in agriculture

Symposium on Research into Agro-technical Methods Aiming at Increasing the Productivity of Crops--Co-efficients for the Most Efficient Use of Fertilizer Nutrients and Means for Reducing the Losses of Nutrients to the Environment under the Conditions of In ; UNITED NATIONS ; UNITED NATIONS

The Hague : Martinus Nijhoff/Dr. W. Junk for the United Nations ; 1983 1983

90-247-2866-5

vi, 352 p.

vi, 352 p.

ISBN :

90-247-2866-5

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Protein and non-protein nitrogen for ruminants : proceedings of the Symposium on Recent Developments in the Use of New Sources of Protein, Essential Amino Acids, and Non-protein Nitrogen, with Special Reference to Ruminants, organized by the Committee on Agricultural Problems of the United Nations Economic Commission for Europe and the Food and Agriculture Organization of the United Nations, Geneva, 10-13 January 1977

Essential Amino Acids, and Non-protein Nitrogen, with Special Reference to Ruminants Symposium on Recent Developments in the Use of New Sources of Protein ; UNITED NATIONS ; Food and Agriculture Organization of the United Nations

Oxford : Published for the United Nations by Pergamon Press ; 1977 1977

0-08-021991-8

vi, 182 p.

vi, 182 p.

ISBN :

0-08-021991-8

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The Condition of forests in Europe. 2004 Executive Report.

UNITED NATIONS ; ECONOMIC COMMISSION FOR EUROPE

Genève : UNECE ; 2004 2004

51 p. : ill., graph., carte, tabl., phot. ; 30 cm

51 p. : ill., graph., carte, tabl., phot. ; 30 cm

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