Primary source: tropical forests and our future earth [The]
Manusia dan hutan: proses perubahan ekologi di lereng G. Merapi
Penjajagan perilaku pertumbuhan dan methode-methode pemberantasan tetumbuhan alang-alang di Indonesia
Predicting rainfall erosion losses: a guide to conservation planning
Genetic control of alcohol dehydrogenase and estimation of some population parameters in Hopea odorata Roxb(Dipterocarpaceae)