Veerasingam K. <br/><br/>
Teaching acids and alkalis in the lower secondary schools / 
by K. Veerasingam. 
 - Penang:  SEAMEO Regional Centre for Edu. in Science and Mathematics,  1974. 
 - 162 p. :  ill. ;  28 cm. 
 - RCC-1 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acids--Study and teaching.<br/>Alkalies--Study and teaching.