Helicopter skeding : state of the art / Dicky Simorangkir Earth enterprise tool kit : markets, technology, financing, new business practices Yield prediction and estimation of site-class for a mangrove species : Rhizhopora apiculata Environmental management accouting policies and linkages Voisces of the poor : poverty and social capital in Tanzania / by Deep Narayan Encyclopaedia of women in 21 st century / Editor in chief, A. KumarEncyclopedia of mass media and communication / edior - in - chief, Arvind KumarApplying Environmental Economics in Africa / Frank J. ConveryIncentives, supervision, and sharecropper productivity / Hanan G. Jacoby, Ghazala Mansuri.Technical guideline for reduced impact tractor logging / Yosep Ruslim, Alexander Hinrichs, Rolf Ulbricht