000 00247nam a2200073 4500
080 _a
_b
245 _aIS: 2720(PART 31):1990 Methods of test for soils part 31: Field determination of california bearing ratio
100 _aBUREAU OF INDIAN STANDARDS
260 _aNEW DELHI
_bBIS
_c1991
300 _a5p
999 _c36268
_d36268