Slide Rule /
Mann, William
Slide Rule / by William Mann and et.all... - Columbus : Charles E Merrill publishing co, 1968. - 72p. : - Independent learning series .
Learning
510.8 / MAN.S
Slide Rule / by William Mann and et.all... - Columbus : Charles E Merrill publishing co, 1968. - 72p. : - Independent learning series .
Learning
510.8 / MAN.S