Roberts, T.J. The Birds of Pakistan T.J. Roberts. - Karachi Oxford University Press 1992 - v.1,617p., ill.+maps.; 28c, - (v.1: Contents: Regional studies and non-passeriformes v.2.Contents: Passeriformes: Pittas to Buntings). . Dewey Class. No.: 598.295491, / R58B