00518nam a2200169Ia 450000500170000000800410001702000150005808200130007310000180008624500310010426000430013530000130017850000430019194200060023495200950024099900130033520250519020158.0240331s9999    xx            000 0 und d  a9555520062  a300bRAT  aRathnapala, N 0aSamaja viddyawe muuladarma  aColombobLake House Publicationsc1986  a210 p .,  aA Book of Principles of Social Science  cL  001040708LaWERCLbWERCLcSSCd2024-03-31l0o 300 RATp1121r2024-03-31w2024-03-31yL  c979d979