Krup, R. S. (1989). Oudyogika sthitivivarangal: Official statistics. State institute of languages.
Chicago Edition CitationKrup, R S. Oudyogika Sthitivivarangal: Official Statistics. Thiruvananthapuram: State institute of languages, 1989.
Deismireacht MLAKrup, R S. Oudyogika Sthitivivarangal: Official Statistics. State institute of languages, 1989.
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