Rana, Dipankar A study on lattice under rough set environment / researched by Dipankar Rana; guided by Sankar Kumar Roy. - Midnapore: Vidyasagar University, 2016. - 159p.: ill; 28 cm.+ 1 CD. Includes bibliography Subjects--Index Terms: Algebraic geometry Lattice point geometry Dewey Class. No.: 516.35 / RAN