00578cam a22002051 4500 sa 63002499 DLC 20260227111934.0 760505s1962 ii b 000 0 eng sa 63002499 (OCoLC)2159661 DLC MiDW OCoLC DLC premarc HC437.K4 N3 National Council of Applied Economic Research. Techno-economic survey of Kerala. New Delhi [1962] ix, 367 p. maps, tables 25 cm. Kerala (India) Economic conditions. 54490 54490