por Zill, Dennis G, 1940- [autor] | Cullen, Michael R [autor] | García Hernández, Ana Elizabeth [traductor].
por Zill, Dennis G, 1940- [autor] | Wright, Warren S [autor] | Cullen, Michael R [autor] | García Hernández, Ana Elizabeth [traductor] | Zill, Dennis G. Differential equations with boundary-value problems.