The Know How book of batteries and magnets: safe and simple experiments, models and games
AMERY Heather
The Know How book of batteries and magnets: safe and simple experiments, models and games - London: Usborne Publishing Ltd, 1975 - 32p.
0860200086 (pbk.)
The Know How book of batteries and magnets: safe and simple experiments, models and games - London: Usborne Publishing Ltd, 1975 - 32p.
0860200086 (pbk.)