@INBOOK {LAL: 1986e, title = {Different methods of land clearing for agricultural purposes in the tropics}, author = {Lal, R. }, year = {1986}, type = {Land Clearing and Development in the tropics edited by R. Lal, P.A. Sanchez, and R.W. Cummings Jr.Rotterdam, A. Balkema}, pages = {55--68}, }