ALEXANDER S. LANGSDORF, . (1955). THEORY OF ALTERNATING CURRENT MACHINARY. : T.M.H. NEW DELHI.
ALEXANDER S. LANGSDORF, . 1955. THEORY OF ALTERNATING CURRENT MACHINARY. : T.M.H. NEW DELHI.
ALEXANDER S. LANGSDORF, . THEORY OF ALTERNATING CURRENT MACHINARY. : T.M.H. NEW DELHI. 1955.