TY  - BOOK
AU  - Plas,H.C.van der
TI  - Ring transformations of heterocycles
SN  - 0127117016
PY  - 1973///
CY  - London
PB  - Academic Press
KW  - Heterocyclic compounds
KW  - Ring formation (chemistry)
N1  - Includes bibliographical references
ER  -