Train your brain :
xviii, 235 p. : ill. ; [ca. 23-29] cm.
"An A.K. Peters book."
Content notes : The gym -- Hints -- Solutions.
Word problems (Mathematics)
xviii, 235 p. : ill. ; [ca. 23-29] cm.
"An A.K. Peters book."
Content notes : The gym -- Hints -- Solutions.
Word problems (Mathematics)