298 WHITTAKER AND LIKENS 



20. FAO, World Forest Inventory, Food and Agriculture Organization of the United 

 Nations, Rome, 1963. 



21. FAO, Production Yearbook, 1970, Vol. 24, Food and Agriculture Organization of the 

 United Nations, Rome, 1971a. 



22. FAO, Yearbook of Fishery Statistics, 1970, Vol. 30, Catches and Landings, Food and 

 Agriculture Organization of the United Nations, Rome, 1971b. 



23. FAO, Yearbook of Forest Products, 19691970, Food and Agriculture Organization of 

 the United Nations, Rome, 1971c. 



24. G. E. Fogg, Advan. Set, 14: 395 (1958). 



25. F. B. Golley, in Ecosystem Structure and Function, p. 69, J. A. Wiens (Ed.), Oregon 

 State University, Corvallis, 1972. 



26. F. Golley, H. T. Odum, and R. F. Wilson, Ecology, 43: 9 (1962). 



27. H. E. Heggestad and E. F. Darley, in Air Pollution: Proceedings of the First European 

 Congress on the Influence of Air Pollution on Plants and Animals, Wageningen, 1968, 

 p. 329, Centre for Agricultural Publishing and Documentation, Wageningen, 1969. 



28. F. B. Hill, this conference. 



29. O. J. Koblentz-Mishke, V. V. Vokovinsky, and J. G. Kabanova, in Scientific Exploration 

 of the South Pacific, p. 183, W. S. Wooster (Ed.), National Academy of Sciences, 

 Washington, 1970. 



30. V. A. Kovda, Sov. Geogr.. Rev. Transl, 12: 6 (1971). 



31. A. L. Lehninger, Bioenergetics, W. A. Benjamin Inc., New York, 1965. 



32. J. von Liebig, Die Naturgesetze des Feldbaues, Vieweg & Sohn GmbH, Braunschweig, 

 1862. 



33. H. Lieth, in Die Stoffproduktion der Pflanzendecke, p. 117, H. Lieth (Ed.), Gustav 

 Fischer Verlag, Stuttgart, 1962. 



34. H. Lieth, in Primary Productivity of the World, H. Lieth and R. H. Whittaker (Eds.), 

 University of North Carolina Press, Chapel Hill, N. C, in press, 1973. 



35. G. E. Likens, ibid. 



36. D. R. McCullough, in Analysis of Temperate Forest Ecosystems, p. 107, D. E. Reichle 

 (Ed.), Springer- Verlag New York, Inc., New York, 1970. 



37. R. Margalef, in Diversity and Stability in Ecological Systems, 22nd Symposium 

 Proceedings, Upton, L. I., 1969, USAEC Report BNL-50175, p. 25, Brookhaven 

 National Laboratory, 1969. 



38. D. H. Meadows, D. L. Meadows, J. Randers, and W. W. Behrens III, The Limits to 

 Growth, Universe Books, Inc., New York, 1972. 



39. P. R. Miller, Calif. Air Environ., 1(4): 1 (1969). 



40. D. Muller, Handb. Pflanzenphysiol, 12(2): 934 (1960). 



41. D. Muller, in Die Stoffproduktion der Pflanzendecke, p. 26, H. Lieth (Ed.), Gustav 

 Fischer Verlag, Stuttgart, 1962. 



42. P. J. Newoould, Sci. Progr., 51: 93 (1963). 



43. W. Noddack, Angew. Chem., 50: 505 (1937). 



44. E. P. Odum, Fundamentals of Ecology, Znd ed., W. B. Saunders Company, Philadelphia, 

 1959. 



45. E. P. Odum and A. E. Smalley, Proc. Nat. Acad. Sci. U.S.A. ,45(4): 617 (1959). 



46. H. T. Odum, in A Tropical Rain Forest, USAEC Report TID-24270, p. 1-191, HI. 

 Odum and R. F. Pigeon (Eds.), 1970. 



47. J. S. Olson, in Analysis of Temperate Forest Ecosystems, p. 226, D. E. Reichle (Ed.), 

 Springer-Verlag New York, Inc., New York, 1970. 



48. S. S. Paterson, Medd. Statens Skogsforskningsinst., 50(5): 1 (1961). 



49. S. S. Paterson, in Die Stoffproduktion der Pflandendecke, p. 14, H. Lieth (Ed.), 

 Gustave Fischer Verlag, Stuttgart, 1962. 



