Method for producing fertilizer using rural colony waste water sludge or combined septic tank sludge
JPH0971491A
Production of whole organic fertilizer of granule by mixing digested and dehydrated sludge of sewage with several kind of organic matter consisting mainly of organic waste of farm and mountain village and granulating the mixture and subjecting granulate to treatment with micro wave
JPH0768297A
Manufacture of sterile organic material by treating sewage sludge by alternating current power source and microwave
JPS6164410A
Manufacture of pipe
JPS60102430A
Frame retaining wall and frame structure
JPS5991010A
Steel fiber reinforced concrete pipe and its manufacture
JPS5916710A
Steel fiber reinforced concrete oval pipe and its manufacture
JPS58185208A
Horizontal type manufacture of fiber reinforced concrete oval pipe
JPS58185209A
Vertical type manufacture of fiber reinforced concrete oval pipe
JPS5811110A
Reinforcing concrete oval pipe and its manufacture
