EEveryday machines and how they workEveryday machines and how they workde Schneider, HermanMateriasHome economicsEquipment and suppliesJuvenile literatureMachineryEdiciones (1)Everyday machines and how they work. (1950)Whittlesey House · inglésMás obras de Schneider, HermanHeath science seriesHow big is big?Science and your futureHeath science series