Martin Krebs has written: 'Hermann Stehr'
Benjamin Krebs has written: '[Type specimen sheets]'
Frederick J. Krebs has written: 'Corporate lobbying'
Hugo Carrillo has written: 'Mortaja'
Hugo Zapata has written: 'Hugo Zapata, 1977-1987'
Albert Krebs has written: 'Fritz-Dietlof, Graf von der Schulenburg'
Hans Krebs has written: 'Reminiscences and reflections' -- subject(s): Biochemists, Biography
Hugo Murno has written: 'A y O'
Hugo Bethmann has written: 'Die Hebezeuge'
Hugo A. Braun has written: 'Berching/Opf'
Hugo Riva has written: 'El Cid'
Hugo Sempilius has written: 'Hvgonis Sempilii..'