Betriebsprobleme auf Kläranlagen durch Blähschlamm, Schwimmschlamm, SchaumS. Kunst, C. Helmer · First published 2000Open the Tome
Einfluss einer Faserbeschichtung auf die mechanischen Eigenschaften von Endlosfasern und C/SiC-VerbundwerkstoffenThomas Helmer · First published 1992Open the Tome
A memorial discourse, preached in Union Park Congregational Church, June 2, 1872C. D. Helmer · First published 1978Open the Tome
Co-operatives in America, their past, present and futureC. D. Helmer · First published 1943Open the Tome
A sermon in memory of Joseph Haven, preached in Union Park Congregational Church, June 7th, 1874C. D. Helmer · First published 1874Open the Tome
