7Steppler H A, Nair P K tL Agroforestry: a decade of development. Kenya= the International Council for Re- search in Agroforestry, 1987, (1) :9N13.
8Conklin H C. Ethnology and Ethnography: Hanun6o Agriculture: A Report on an Integral System of Shifting Cultivation in the Philippines. American Anthropolo- gist, 1958, 60(5).968-969.
9Montambault J R, Alavalapati J R R. Socioeconomic research in Agroforestry- a decade in review. Agrofor- estry System, 2005, 65 : 151-161.
10Holopaine J K. Multiple Functions of Inducible plant vol- atiles. Trends in Plant Science, 2004, 9(11) :529-533.