Vol.6 No.4 July, 1995
Contents
Preface
From Filth Cleansing to Waste Disposal----Koutei Sakai 271

Special Issues: Biomonitaring of Waste Disposal Site Waste Disposal Site as a Huge Bioreactor----Kazuhiro Takamizawa 273 abst
Purification Mechanism by Activated Cover Soil and New Waste Disposal System----Yasushi Matsufuji 278 abst
Mutagenicity of Landfill Leachate----Takashi Someya 285 abst
Gas Generation and Its Countermeasures at Landfill Site----Joji Fukuyama and Junji Masuda 294 abst
Microflora in an Aerated Lagoon at a Sea-Based Solid Waste Disposal Site----Keiichi Kawai 303 abst
Appearance of Plankton in the Aerated Lagoon and Stabilization Ponds----Shoichi Mori 310 abst

Review
Reaction Hazard Caused by Mixing of Waste----Yoichi Uehara, Hideo Otani and Yasushi Oka 322 abst

Research Report
System for Treatment and Recycling of Organic Matter to Connect Urban and Rural Area----Tadahiro Mori, Huiliang Cai and Jae Kyung Yang 330 abst