000 00360nam a2200121Ia 4500
082 _aIS CODE
_bB.I.S
100 _aBureau of Indian Standards[BIS]
245 _aIS:2131-1981. Indian standard method for standard penetration test for soils.
260 _aNew Delhi
_bBureau of Indian Standards
_c1987
300 _a10p.
500 _aENG
890 _aIndia
999 _c18487
_d18487