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2
-
Rubber research in Sri Lanka [1960-1980] : a bibliography with abstracts / by N.A.W.A.T. Alwis.
- 856.4
- National science council of Sri Lanka. Social science research centre,
- 1981.
- Colombo :
-
Strike July 1980
- Centre for society and religion,
- 1981.
- Colombo :