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.
0860200094 (hbk.)
The Know How book of batteries and magnets : safe and simple experiments, models and games - London: Usborne Publishing Ltd., 1975 - 32p.
0860200094 (hbk.)