TY - BOOK AU - De Silva, M. Asoka T TI - Evolution of technological innovations in ancient Sri Lanka SN - 9789556651409 U1 - B0871 PY - 2011/// CY - Colombo PB - Vijitha Yapa Publications KW - BOOKS BOX 871 KW - BUDDHIST ARCHITECTURE KW - COMBINE MATHS KW - HISTORY-SRI LANKA KW - IRRIGATION KW - SHIPBUILDING KW - STEEL INDUSTRY ER -