Dutta , Phanindra Narayan Prayog Bhasha Bigyanar Ruprekha / by Phanindra Narayan Dutta - 1st Ed. - Guwahati ; Bishal Prakashan : 2017 - 205 p. 20 cm. - Prayog Bhasha Bigyanar Ruprekha . ISBN: 9789382587552 Dewey Class. No.: 891.5461 / DUT