LEADER 00000nam 2200193 a 4500 001 0965683 003 UkHlHU 007 t 008 002007 2 1992 000 eng 020 0906588278 040 UkHlHU 050 4 QA 107 M4 245 00 Mental methods in mathematics :|ba first resort. 260 Leicester :|bThe Mathematical Association,|c1992. 300 72p. 650 0 Mathematics|xStudy and teaching|zGreat Britain. 650 0 Mental arithmetic|xProblems, exercises, etc. 710 2 Mathematical Association.
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