Byatt, I. C. R., & Cohen, A. V. (1969). An attempt to quantify the economic benefits of scientific research. H.M.S.O..

Byatt, I. C. R., and A. V. Cohen. An Attempt to Quantify the Economic Benefits of Scientific Research. London: H.M.S.O., 1969.

Byatt, I. C. R., and A. V. Cohen. An Attempt to Quantify the Economic Benefits of Scientific Research. H.M.S.O., 1969.