00454nam a2200169Ia 4500008004100000040001900041041001200060082002400072100002000096245005000116260002500166300002400191440002100215650002000236700001000256850001800266131103s9999    xx            000 0 und d  aLoreto College  aEnglish  a915/MINbLCBED/6007  aBallance, Helen  aMining and drillingcHelen Ballance and Denis  aLondonbGinn c[19?]  a32p.b pic.c 17cm.  aMachines at work  aWorld Geography  aDenis  aLCBED/915/MIN