Differential equations /
Nielson, Kaj Leo, 1914-
Differential equations / Kaj Leo Nielson. - 2nd ed. - New York : Barnes & Noble, 1966. - xxi, 276 p. : ill. ; 21 cm. - College outline series ; no. 72 .
Bibliographical footnotes.
Open Access.
6628306
Differential equations.
Differential equations / Kaj Leo Nielson. - 2nd ed. - New York : Barnes & Noble, 1966. - xxi, 276 p. : ill. ; 21 cm. - College outline series ; no. 72 .
Bibliographical footnotes.
Open Access.
6628306
Differential equations.