Usha, G. Factors influencing the chemical shift a case study with a, a,-DI-tert butylthioaceric esters by G. Usha. - Bengalore : Indian Institute of Science, 1984. - vii, 161p. : ill. Includes bibliographical references. PhD;1984;Organic chemistry. Subjects--Topical Terms: α,α-DI- TERTIARYBUTYLTHIOACETIC ESTERS Dewey Class. No.: 546.038 / N84