000
002720000a22001210004500
080
_a
51
_b
K4
100
_a
Keal, H.M.
245
_a
Essential mathematics for skilled workers
260
_a
New York
_b
Wiley
_c
1942
300
_a
293p.
700
_a
Leonard, C.J.
942
_c
BK
999
_c
53046
_d
53046