(1972). Learn about machines. McGraw-Hill.
Dyfyniad Arddull ChicagoLearn About Machines. McGraw-Hill, 1972.
Dyfyniad MLALearn About Machines. McGraw-Hill, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
(1972). Learn about machines. McGraw-Hill.
Dyfyniad Arddull ChicagoLearn About Machines. McGraw-Hill, 1972.
Dyfyniad MLALearn About Machines. McGraw-Hill, 1972.