http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Cognitive development and acquisition of the mathematical concepts of fraction, ratio and proportion
a study of a sample of Malaysian urban secondary school pupils
Also available on microfiche. Kuala Lumpur : Perpustakaan, Universiti Malaya, 1995. 3 microfiches: negative.
Dissertation (M.Ed.) - Fakulti Pendidikan, Universiti Malaya, 1987