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Ramappa, P. G. and Manjappa, S. (1989) Extraction and spectrophotometric determination of iron in steels and hematite ore using thiocyanate and chlorpromazine. Current Science, 58 (14). pp. 797-798.
Nayak, A. N. and Ramappa, P. G. and Yathirajan, H. S. and Manjappa, S. (1982) Microdetermination of niobium (V) with imipramine hydrochloride. Acta chimica Hungarica, 111 (2). pp. 233-238.
Nayak, Anant N. and Ramappa, P. G. and Yathirajan, H. S. and Manjappa, S. (1982) Spectrophotometric determination of microgram amounts of penicillins by solvent extraction with azure b. Analytica Chimica Acta, 134. 411 - 415. ISSN 0003-2670
Nayak, Anant N. and Yathirajan, H. S. and Manjappa, S. (1981) Spectrophotometric Determination of Isoniazid. Current Science, 50 (18). pp. 812-813. ISSN 0011-3891
Nayak, Anant N. and Manjappa, S. and Ramappa, P. G. and Yathirajan, H. S. (1981) Improvement of the extractionspectrophotometric thiocyanate method for the determination of rhenium by addition of imipramine. Fresenius' Zeitschrift für analytische Chemie, 309 (5). p. 396. ISSN 1432-1130
