Julius, E.H.
Rapid Math: tricks & tips, 30 days to number power - New York Jonh Wiley & Sons 1992 - ix, 229 pages
471575631
Arithmetic
513.9 / JUL
Rapid Math: tricks & tips, 30 days to number power - New York Jonh Wiley & Sons 1992 - ix, 229 pages
471575631
Arithmetic
513.9 / JUL