Introductory differential equations by Abell, Martha L. 1962-, Braselton, James P. 1965-

Available for University of the Philippines System via ScienceDirect. Click here to access
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Differential equations with boundary-value problems by Zill, Dennis G.

Available for University of the Philippines Diliman College of Engineering via e-Textbook Reserves under Vital Source. Click here to access
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A first course in differential equations with modeling applications by Zill, Dennis G. 1940-

A first course in differential equations with modeling applications by Zill, Dennis G.

Differential equations with boundary-value problems by Zill, Dennis G.

Differential equations with boundary-value problems by Zill, Dennis G. 1940-

A first course in differential equations with modeling applications by Zill, Dennis G. 1940-

An invitation to applied mathematics differential equations, modeling, and computation by Chicone, Carmen

Differential equations theory, technique, and practice with boundary value problems by Krantz, Steven G., Simmons, George F.

Differential equations an introduction to basic concepts, results and applications by Vrabie, Ioan I.