Nzukọ 2009 California Urban Forest Conference: "Gịnị ugbu a? Gịnị na-esote? A New Direction for Urban and Community Forestry "bụ nnukwu ihe ịga nke ọma. Ihe karịrị 100 sonyere jupụtara n'ọnụ ụlọ ogbako dị na Ventura ka Andy Lipkis, Onye isi oche nke TreePeople, kwuputara isi okwu ...