The trachtenberg speed system of basic mathematics
translated and adapted by Ann Cutler [and] Rudolph McShane
Cutler, Ann
McShane Rudolph
text
New Delhi
Rupa Publications
2012
monographic
270p. 21cm(pbk).
513
9780285629165
B-496815-834 ENG-110401
UBH/Ven
DBAD/PUB
20140812155017.0