DAVID KEY DIETRICHDONALD FRANKLIN FOUSTSTANLEE TERESA BUDDLEDEBORAH ANNE HAITKO
makadambeddrengoringsmaskin with device for utleggning of hardskumplattor A mobile ballast cleaning machine comprising a frame mounted on two undercarriages for mobility along a track supported on the ballast resting on a subgrad... K* Folser,J* Theurer 被引量: 0发表: 1985年 skummaterial...
regulation of utlakningsbart mercury in lysrA method and apparatus for preventing the formation of leachable mercury in mercury arc vapor discharge lamps is provided which comprises providing in the lamp structure an effective amount of a silver compound, gold compound, or combination thereof.HAITKO...