Nuffield Foundation. Science Teaching Project. (1971). Students' book unit 4: Physics, waves, & oscillations. Nuffield Advanced Science/Longman.
Dyfyniad Arddull ChicagoNuffield Foundation. Science Teaching Project. Students' Book Unit 4: Physics, Waves, & Oscillations. London: Nuffield Advanced Science/Longman, 1971.
Dyfyniad MLANuffield Foundation. Science Teaching Project. Students' Book Unit 4: Physics, Waves, & Oscillations. Nuffield Advanced Science/Longman, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.