000			00307nam a2200133Ia 4500
008			231017s9999 xx 000 0 und d
082			_a620.118
082			_bHOB
245		0	_aMinimum Requirements for Durable Concrete
245		0	_cD.W. Hobbs
260			_bD.W. Hobbs
300			_c30cm
942			_cREP
999			_c603979 _d603979