Rana, Rajesh K., et al. “Benefit - Cost Analysis of Agro-Forestry Trees in Eroded Soils - a Case Study of Upper - Swan Catchment in District Una (H.P.)”. Indian Forester, vol. 126, no. 12, Dec. 2000, pp. 1297-08, doi:10.36808/if/2000/v126i12/3329.