R. A. K. Mason died in 1971.
R. A. K. Mason was born in 1905.
R. K. Johnson died in 1971.
K. R. Ramanathan died in 1984.
R. K. Gordon died in 1973.
R K Joshi died in 2008.
R. K. Kumar died in 1999.
R. K. Harrison died in 1993.
K. R. Malkani died in 2003.
R. K. Sinha died in 2003.
R. K. Patil died in 2007.
K. P. R. Gopalan died in 1997.
R. K. Bijapure died on 2010-11-19.