A teacher's guide to the study of acids and bases in lower secondary schools
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Penang
Seameo Regional Centre for Education in Science and Mathematics
1974
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A teacher's guide to the study of acids and bases in lower secondary schools
Acids and bases a teaching unit for the lower secondary schools
by: Thowong, Umpai
Published: (1974)
by: Thowong, Umpai
Published: (1974)
Lower secondary science matters normal (Technical)
