TY  - BOOK
AU  - Leonard, T. Hillen, I. E. 
AU  - Roessel, H. van 
TI  - Partial differential equations: : theory and completely solve problems/  
SN  - 9781525550256 (pbk.)
PY  - 2019///.
CY  - Canada
PB  - Friesen Press
N1  - Includes appendix, bibliographical references and index

ER  -