Text ( visual ) : unmediated Distribution of workers and non-workers / R.L. Bisotra. -- [Shimla] : Director of Census Operations, Himachal Pradesh , 2002. -- xiii, 207 p. : ill. (some col.), maps (some col.) ; 29 cm. -- (Census of India, 2001 ; ser. 3 . Himachal Pradesh . Provisional population totals ; paper 3 of 2001). -- "R. L. Bisotra, Director of Census Operations, Himachal Pradesh". -- (BA69262256) ; https://ci.nii.ac.jp/ncid/BA69262256 Author Heading(s): India. Director of Census Operations, Himachal Pradesh ; Bisotra, R. L.