Mathematics /
Duncan, Ernest R.
Mathematics / Ernest R Duncan; et al - Boston : Palo Alto : Houghton Mifflin company, 1983. - 411 p. : ill. ; 26 cm.
Include index.
0395313058
Mathematics.
Arithmetic.
511 DUL
Mathematics / Ernest R Duncan; et al - Boston : Palo Alto : Houghton Mifflin company, 1983. - 411 p. : ill. ; 26 cm.
Include index.
0395313058
Mathematics.
Arithmetic.
511 DUL