por Zill, Dennis G, 1940- [autor] | Ojeda Peña, Eduardo M [traductor] | Cofré Matta, Álvaro [traductor] | [traductor].
por Zill, Dennis G, 1940- [autor] | Cofre Matta, Alvaro [traductor] | Zill, Dennis G, 1940-. First course in differential equations with applications.