Understanding electricity.
Understanding electricity.
- Quezon City : Felta Multi Media, c [?].
- 1 videodisc (DVD) (55 mins) : sd., col.; 4 3/4 in. Physical science; grades 6-12
English
DVD
Electricity
621.3 Un21 c[?]
English
DVD
Electricity
621.3 Un21 c[?]