Sneh Bunyahong <br/><br/>
An introduction to sets for thai teachers / 
by Sneh Bunyahong , Pongsri Sakdapolaraks , Boonyeun Sermsaksakoon. 
 - Penang :  SEAMEO Regional Centre for Edu. in Science and Mathematics,  1970. 
 - 141 p. :  ill. ;  25 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Pongsri Sakdapolaraks.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Primary)--Thailand.<br/>Mathematics--1961-