TY  - BOOK
AU  - Purkayastha, Makhan Lal
ED  - Dr. H. Janjappa
TI  - Synthetic studies on heterocycles using oxoketene-S, S-, N- and O.S-acetals
U1  - DS 
PY  - 1989///
CY  - Shillong
PB  - NEHU, Dept of Chemistry
ER  -