Carl Beer has written:
'A study of nitrate respiration in the activated sludge process' -- subject(s): Activated sludge process, Sewage, Nitrification, Purification
Carl Law has written: 'Carl Law'
Carl Gebhardt has written: 'Spinoza'
Carl Snoilsky has written: 'Dikter'
Carl Scholz has written: 'Liekut'
Carl Werner has written: 'Gedichte'
Carl Stern has written: 'Gedichte'
Carl Henckell has written: 'Schwingungen'
Carl Knapp has written: 'D'r \\'
A. Low-Beer has written: 'Herbert Spencer'
Sue De Beer has written: 'Sue de Beer'
Carl Auge has written: 'The invisible of Memphis'
Carl Laufs has written: 'A crazy idea'