فهرست مقالات Heteropoly acids دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - Environmentally benign synthesis of 1,8-dioxooctahydroxanthene derivatives using 10-molybdo-2-vanadophosphoric acid as an efficient and reusable catalyst under solvent-free condition Laxmikant Chavan Bhagwat Nagolkar Trimbak Chondhekar Sunil Shankarwar