Scientists and inventors /
Dahl, Norman.
Scientists and inventors / Norman Dahl. - Beaver Books : Londres, 1979. - 108 p. : fot.ocopia ; 18 x 23 cm
060033712X
Cientificos-Biografias Inventores
Scientists and inventors / Norman Dahl. - Beaver Books : Londres, 1979. - 108 p. : fot.ocopia ; 18 x 23 cm
060033712X
Cientificos-Biografias Inventores