Megaphone Amplifier / 
Norhayatul Azwa Shamsudin ...[et al.] 
 - Permatang Pauh, Pulau Pinang :  Politeknik Seberang Perai,  2002 
 - 104p. :  ill. ;  30cm. 
<br/><br/><label>Subjects--Corporate Names: </label><br/>PSP--Curricula
<br/><br/><label>Subjects--Topical Terms: </label><br/>electronic device