1. Neolithic urban primacy: The case against the invention of agriculture;Allen;J Theor Biol,1977
2. Kalter , R.J. R. Milligan W. Lesser W. Magrath D. Bauman 1984 Biotechnology and the dairy industry: Production costs and commercial potential of the bovine growth hormone. A.E. Research 84-22. Department of Agricultural Economics. Cornell University Agricultural Experiment Station. Ithaca, NY Malcolm, A.H
3. Kalter , R.J. R. Milligan W. Lesser W. Magrath D. Bauman 1985 Technology, public policy, and the changing structure of American Agriculture: A special report for the 1985 farm bill 0TA-F-272 U.S. Congress, Office of Technology Assessment, Washington, DC