Kathleen Wolf
Bala puisano ena ho tsoa ho Makasine ea OnEarth le Dr. Kathleen Wolf, setsebi sa kahisano ka bobeli University of Washington's School of Forest Resources le US Forest Service, ba ithutang kamoo lifate le libaka tse tala li ka etsang hore baahi ba litoropong ba phele hantle le ho thaba. Bala puisano mona ho ithuta ka lipatlisiso tse khahlang tsa Dr. Wolf.
Braun, Ashley. “Na Sefate se ka U Thabisa?” Makasine ea OnEarth 8 March 2011