Syrocki, B. John,
What is a machine / B. John Syrocki ; Pictured by Gregory Orloff. - Chicago : Benefic Press, [1960] - 45 p. : ills. ; 20 cm. - The What is it series .
323 323
60006587
Readers--Technology.
621.9 / S85W
What is a machine / B. John Syrocki ; Pictured by Gregory Orloff. - Chicago : Benefic Press, [1960] - 45 p. : ills. ; 20 cm. - The What is it series .
323 323
60006587
Readers--Technology.
621.9 / S85W