TY - BOOK ED - Lankava. Janalekhana ha sankhyalekhana departamentuwa TI - 1962 Krushikarma sangananaya Vol 3 : asvaddana lada kumbura U1 - 315.6305489 PY - 1965/// CY - Colombo PB - Dept. of Census & Statistics N1 - SR ER -