Gurumeet C. Wadhawa DDP. GREEN SYNTHESIS OF 3, 4-DIHYDROPYRIMIDINONE USING FERROUS SULPHATE AS RECYCLABLE CATALYST. Pharmaceutical sciences [Internet]. 2014 Feb. 23 [cited 2024 Dec. 22];1(6). Available from: http://innovativejournal.in/index.php/jpro/article/view/679