Water: its physical, chemical and biological properties.
Water: its physical, chemical and biological properties. [kit] :
- [s.l.] : Science and mankind, 1980.
- 2 filmstrips ; 2 sound cassettes (52 min.) + teachers guide
Issued in two parts, sound accompaniment compatible for manual and automatic operation
Water
Issued in two parts, sound accompaniment compatible for manual and automatic operation
Water
