ELSA SURYA, R. E. PENGARUH PENGOMPOSAN TERHADAP RASIO C N KOTORAN AYAM DAN KADAR HARA NPK TERSEDIA SERTA KAPASITAS TUKAR KATION TANAH (COMPOSTING EFFECT OF CHICKEN MANURE TOWARDS C N RATIO AND AVAILABLE NPK NUTRIENT AND SOIL CATION EXCHANGE CAPACITY). UJC 2013, 2.