text xx New York Orient Longmans 1960 9999 monographic und ENG 103P, 17CM English FictionELEMENTARY DIFFERENCE OPERATIONS, INTERPOLATION AND EXTRAPOLATION, THE DETERMINATION OF DIFFERENCE EQUATIONS, LINEAR DIFFERENCE AND FUNCTIONAL EQUATIONS WITH CONSTANT COEFFICIENTS, THE GENERAL DIFFERENCE EQUATION OF THE FIRST ORDER, LINEAR DIFFERENCE EQUATIONS WITH VARIABLE CO-EFFICIENTS, SOME APPLICATIONS OF DIFFERENCE EQUATIONS, DIFFERENCE EQUATIONS ASSOCIATED WITH FUNCTIONS OF TWO VARIABLES 823 PUB-S 210324