5RESEARCH ON COMPOSING POLYALUMINUM SULFATE USING BY- PRODUCTS OF POTASSIUM- FELDSPAR DECOMPOSING18-20
12INVESTIGATION ON CHARGES CALCULATION FOR DISPOSING WASTE GAS FROM COAL- FIRED HEAT- ENGINE PLANT37-39
14Preliminary Discussion on the Status and Developing Countermeasure of Coal Mine Environment Statistic43-44
17DESIGN AND REALIZATION OF ECOLOGICAL ENVIRONMENT QUALITY ASSESSMENT SYSTEM BASED ON AREVIEW50-52,56