Using integrated land surveys and agreocosystem analysis to study upland areas in East Java

Program Alipbata berbasis Agroekologi di Desa Pantai Bahagia = Agroecology-based Alipbata Program in Pantai Bahagia Village

Dampak pemupukan nitrogen pada budidaya tanaman semusim di daerah pertanian dataran tinggi (Studi pada Sub DAS Klakah DAS Serayu Kabupaten Wonosobo)

Agriculture and environment: the physical geography of temperature agriculture systems

Agroecology: the scientific basis of alternative agriculture