Filter
Sökt på: Sökresultat
Filter
totalt 3 träffar
Advances in Soil Science
häftad,
2011,
Engelska,
ISBN 9781461389842
From the beginning of agriculture until about 1950, increased food production came almost entirely from expanding the cropland base. Since 1950, however, the yield per unit of land …
Advances in Soil Science
häftad,
2011,
Engelska,
ISBN 9781461278122
The International Society ofSoil Science was organized in 1924 and the 1st International Congress ofthe Society was held in Washington, D. C. , United States ofAmerica, in 1927. …
Advances in Soil Science
häftad,
2011,
Engelska,
ISBN 9781461291121
The world needs for food and fiber continue to increase. Population growth in the developing countries peaked at 2. 4 percent a year in 1965 and has fallen to about 2. I percent. …