Resources for chemistry learning and teaching /
UNESCO.
Resources for chemistry learning and teaching / UNESCO. - Bangkok : UNESCO Principle Regional office for Asia and the pacific, 1989. - 123 p. : ill. ; 27 cm.
SCE.
540.7 UNE
Resources for chemistry learning and teaching / UNESCO. - Bangkok : UNESCO Principle Regional office for Asia and the pacific, 1989. - 123 p. : ill. ; 27 cm.
SCE.
540.7 UNE