00281nam a2200109Ia 4500008004100000041000800041082002000049100001000069245005000079260003400129300000800163211209s1980    xx            000 0 und d  aeng  a550.246 SIN/PAR  aSINGH  aTEXT BOOK OF ENGINEERING AND GENERAL GEOLOGY   bKATSON PUBLISHING HOUSEc1980  a540