00394nam a2200157Ia 4500003000400000005001700004008004000021040000700061041001200068082001600080100001500096245005200111260002900163300000800192650003600200OSt20240607120000.0210210b1990   xxu||||| |||| 00| 0 eng d  cAL  aEnglish  a510.02 TRAC  aCUTTER (A)  aTRACHTENBERG SPEED system of basic mathematics.  aLondonbRupa & co.c1990  a270  aMathematics  Maths  Basic maths