00421nam a22001697a 4500 11867 11867 210113b ||||| |||| 00| 0 eng d 510 T644 120 Toft, Louis. Practical mathematics - I 3rd ed. London Pitman 1951 vii,504 p. 10.35 Mathematics 552 McKay, A. D. D. BK 0 0 ddc 0 510_000000000000000_T644 0 22251 CL CL 1968-02-15 Das Gupta & Co 510 T644 03196 2021-01-13 BK