GUPTA V, . (2005). HETROCYCLIC CHEMISTRY - II. NEW YORK: WILEY INTERSCIENCE PUBLICATION NEW YORK.
GUPTA V, . 2005. HETROCYCLIC CHEMISTRY - II. NEW YORK: WILEY INTERSCIENCE PUBLICATION NEW YORK.
GUPTA V, . HETROCYCLIC CHEMISTRY - II. NEW YORK: WILEY INTERSCIENCE PUBLICATION NEW YORK. 2005.
