Yazar
j l sehgal
7 cilt bulundu.
J. L. Sehgal · National Bureau of Soil Survey & Land Use Planning, Indian Council of Agricultural Research
684 sayfa · 1994
Soils / Composition / Soil mineralogy
J. L. Sehgal · National Bureau of Soil Survey & Land Use Planning, Indian Council of Agricultural Research
107 sayfa · 1990
Agricultural ecology / Agricultural geography / Soils
J. L. Sehgal · National Bureau of Soil Survey and Land Use Planning, Indian Council of Agricultural Research
19 sayfa · 1995
Soil moisture / Soil temperature
J. L. Sehgal · Oxford & IBH Pub. Co.
80 sayfa · 1994
Agricultural geography / Soil degradation / Agricultural ecology / Maps
J. L. Sehgal · National Bureau of Soil Survey & Land Use Planning, Indian Council of Agricultural Research
356 sayfa · 1993
Red soils / Laterite / Congresses
J. L. Sehgal · National Bureau of Soil Survey & Land Use Planning, Indian Council of Agricultural Research and Oxford & IBH Pub. Co., New Delhi
130 sayfa · 1992
Soils / Agricultural ecology / Agricultural geography