The oxygen story [video recording]. / 

 - Quezon City :   AGC Educational Media,   c?.  
 - 1videodisc(VCD)(15min.): sd., col.; 4 3/4in.   
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>VCD 546.721 Ox9