000			00351nam a2200157Ia 4500
008			240220s9999 xx 000 0 und d
041			_aENG
245		0	_aIs - 456 - 1978 (Third Revised)
260			_aNew Delhi
260			_bIndian Standards Institution
260			_c1981
300			_a148p.
365			_b52
650			_aCIVIL
942			_cDBK
999			_c16837 _d16837