Sumner, J.L. A Survey of Process Hygiene in the Sri Lankan Prawn Industry II. The Hygiene Status of Personnel - Colombo 15 : NARA, 1980 - P. 9-11 - Bulletin of the Fisheries Research Station Sri Lanka (Ceylon) ; Vol.30 Nos. 1 and 2 . Subjects--Topical Terms: Aquatic Sciences