TY - GEN AU - Tillman,David ED - Symposium on fuels and energy from renewable resources: national meeting of the american chemical society, 147 TI - Uncounted energy: the present contribution of renewable resources SN - 0126912505 KW - Ressources renouvelables KW - Energie KW - Sylviculture KW - Agriculture N1 - bibliogr. p. 51-54 ER -