Section 31(4)(b) in West Bengal Town and Country (Planning and Development) Act, 1979
(b)allocate areas or zones of land for use -(i)for residential, commercial, industrial, agricultural, natural scenic beauty, forest, wild life, natural resources, fishery and landscaping;(ii)for public and semi-public open spaces, parks and playgrounds;(iii)for such other purposes as the Planning Authority or the Development Authority may think fit;