Karakter Populasi Wereng Bijau, Nephotettix Virescens = (Population Characteristics Of The Green Leafhopper, Nephotettix Virescens (Hemiptera: Cicadellidae) In The Endemic And Non Endemic Areas Of - Perpustakaan UGM, i-lib ([Yogyakarta] : Fak. Filsafat UGM, 2004)