References
- Dumont , R. and Rosier , B . 1969 . The Hungry Future , New York : Frederick A Praeger Inc .
- Wald , G. 1970 . quoted in Earth doomed, scientist contends . Louisville Courier-Journal , Feb 5
- Brown , H. , Bonner , J and Weir , J . 1963 . The Next Hundred Years , New York : Viking Press Inc .
- Frost , J . 1969 . Earth, air, water . Environment , 11 : 1433