TY - BOOK AU - Plas, H. C. Van Der TI - Ring transformations of heterocycles SN - 0127117024 (hb) U1 - 547.59 PY - 1973/// CY - London PB - Academic Press Inc. Ltd. KW - Heterocyclic compounds KW - Ring transformations KW - Ring contractions KW - Ring expansions KW - Oxygen atom KW - RIPS N1 - Includes bibliographical references and indexes ER -