Kārmika Saṃvardhana Maṇḍalaya. (1968). Quality products from Ceylon. Industrial Development Board.
Chicago-viite (17. p.)Kārmika Saṃvardhana Maṇḍalaya. Quality Products from Ceylon. [Colombo: Industrial Development Board, 1968.
MLA-viite (8. p.)Kārmika Saṃvardhana Maṇḍalaya. Quality Products from Ceylon. Industrial Development Board, 1968.
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