R. S. Crass has written:
'Freshwater fishes of the Natal' -- subject(s): Freshwater fishes, Fishing
Hanns Michael Crass has written: 'Bonaventura Genelli als Illustrator' 'Bibliotheksbauten des 19 Jahrhunderts in Deutschland' -- subject(s): History, Library architecture
R. S. Young has written: 'Cobalt'
R. S. Weiss has written: 'Loneliness'
S. R. Mintslov has written: 'Zakat'
R. S. R. Parker has written: 'Adhesion and adhesives' -- subject(s): Adhesives
R. S. Lazarus has written: 'Personality and adjustment'
R S. Drago has written: 'Acids and bases'
S R. Yatri has written: 'Pratham parichay'
S. R. Crockett has written: 'The Black Douglas'
R S. Platt has written: 'Latin America'
S. R. Persius has written: 'The corporation of Foylanda'
R. S. Karunaratne has written: 'Vignettes on life'