000			00314nam a2200133Ia 4500
001			9911
008			170722s9999 xx 000 0 und d
100			_aMason, Donald
245			_aPrimer of non-book materials in libraries /
260			_c1958.
653			_aLibrary Science
653			_aNon-book
942			_cGEN
999			_c51246 _d51246