TY  - BOOK
AU  - Penney, David E
AU  - Edwards, C. H
TI  - Elementary differential equations with boundary value problems. (3rd ed.)
SN  - 013253410X
AV  - QA 371 Edw 
PY  - 1992///
CY  - Englewood Cliffs
PB  - Prentice Hall
KW  - BOUNDARY VALUE PROBLEMS--PROBLEMS, EXERCISES, ETC.
KW  - DIFFERENTIAL EQUATIONS--PROBLEMS, EXERCISES, ETC.
KW  - MATHEMATICS--HANDBOOKS, MANUALS, ETC
ER  -