000 00598 am a2200205 a 4500
245 1 _aEffect of different crop rotations on physical properties of soil.
300 _a61p+Appent.2+Bib.+Fig. 11
650 _aSoil
650 _aSoil science
650 _aSoil analysis
650 _aSoil chemicophysical properties
650 _aCrops
650 _aCrop sotation
650 _aCroping systems
502 _cU. P. Institute of Agricultural Science, Kanpur.
_bM. Sc. (Soil Conservation)
_c1971
502 _gGupta, R. N.
100 1 _aRam Shankar
_d
942 _2udc
_cT
901 _aRF6002
999 _c149077
_d149077