Inke Siri <br/><br/>
A teacher's guide to the study of acids and bases in lower secondary schools 
prepared by Inke Siri 
 - Penang  SEAMEO Regional Centre for Edu. in Science and Mathemtics  1974 
 - various pagings : ill. ; 27 cm. 
 - RCC-1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acids--Study and teaching<br/>Bases (chemistry)--study and teaching