ACKNOWLEDGEMENTS 



This publication is a result of the research 

 program of the Institute of Natural and Environmental 

 Resources. The Institute is a multi-disciplinary group 

 of scientists involved in a coordinated program of 

 research, teaching, and extension. The research effort 

 encompasses investigation of: problems affecting the 

 quality of the environment, economics of agriculture, 

 forest and wildlife resources, the efficient use and 

 conservation of water and soil, and regional and 

 community planning and development. 



This manuscript was prepared using the 

 DECsystem-10 Model 1090 Computer at the University of New 

 Hampshire, formatted with RUNOFF, and printed on a DIABLO 

 1620 printer. 



Programs of the New Hampshire Agricultural 

 Experiment Station are open to all persons without regard 

 to race, color, national origin or sex. The Univeristy 

 of New Hampshire is an Affirmative Action/Equal 

 Opportunity Employer. 



