Lean, G. A.
The training of spatial abilities a bibliography G.A. Lean. - Lae Mathematics Education Centre, Papua New Guinea University of Technology 1980. - 17 p. 30 cm. - Report no. 8. .
Space perception in children--Bibliography.
The training of spatial abilities a bibliography G.A. Lean. - Lae Mathematics Education Centre, Papua New Guinea University of Technology 1980. - 17 p. 30 cm. - Report no. 8. .
Space perception in children--Bibliography.