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
S. R. Mintslov has written: 'Zakat'
R. S. Young has written: 'Cobalt'
R. S. Weiss has written: 'Loneliness'
R. S. R. Parker has written: 'Adhesion and adhesives' -- subject(s): Adhesives
R. S. Duddle has written: 'The craft of the metalworker'
S. R. Iyer has written: 'Indian chess'
R. S. Rania has written: 'R.S. Rania'
S R. Badmin has written: 'Village and town'
R S. Platt has written: 'Latin America'
R. S. Karunaratne has written: 'Vignettes on life'
R. S. Woodroofe has written: 'Nature of the Vale'