The metric system :
Ploutz, Paul F.
The metric system : - 2d ed. - Columbus, Ohio : Merrill, c1977. - viii, 109 p. : ill. ;
0675085381
Metric system,measurement
530.8 PLO
The metric system : - 2d ed. - Columbus, Ohio : Merrill, c1977. - viii, 109 p. : ill. ;
0675085381
Metric system,measurement
530.8 PLO
