Theory and problems of differential equations.
Ayres, Frank.\
Theory and problems of differential equations. - - Schaum Pub., New York, 1952 - p.296,illus., 27.5cm., - .
32
517.91 Ayr-8
Theory and problems of differential equations. - - Schaum Pub., New York, 1952 - p.296,illus., 27.5cm., - .
32
517.91 Ayr-8