00520nam a2200181 4500 OSt 20240819151323.0 240819b |||||||| |||| 00| 0 eng d NEHU Library DS 547.592 PUR Purkayastha, Makhan Lal Synthetic studies on heterocycles using oxoketene-S, S-, N- and O.S-acetals NEHU Shillong NEHU, Dept of Chemistry 1989 188p., tables.; 28cm.- Dr. H. Janjappa ddc THES 0 0 0 0 UPT NEHU NEHU 2011-11-25 0 DS 547.592 PUR 102110 2011-11-25 00:00:00 2011-11-25 THES 0 0 0 0 UPT NEHU NEHU 2011-11-25 0 DS 547.592 PUR 102316 2011-11-25 00:00:00 ;1 2011-11-25 THES 85154 85154