1. Organism society and science;Gerard;Sci. Mon.,1940
2. Instruments and man;Gerard;Instruments,1945
3. The scope of science;Gerard;Sci. Mon.,1947
4. A biologist's view of society;Gerard;Common Cause,1950
5. (Reprinted in General Systems; Yearbook of the Society for the Advancement of General Systems Theory, 1956, 1, 161-162.)