Elementry differential equations.
Rainville, Earl D.
Elementry differential equations. - 6 th ed. - New York Macmillan Pubg. Co. 1981 - 529p
515.35 RAI-E
Elementry differential equations. - 6 th ed. - New York Macmillan Pubg. Co. 1981 - 529p
515.35 RAI-E