ACKNOWLEDGEMENTS 



This publication is a result of the research program of the Insti- 

 tute of Natural and Environmental Resources. The Institute is a 

 multi-disciplinary group of scientists involved in a coordinated pro- 

 gram of research, teaching and extension. The research effort 

 encompasses investigations 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. 



The authors wish to acknowledge the assistance of Glenn 

 Israel, Tom Frisbee and Tom Ilvento in data collection and organi- 

 zation. This paper represents a contribution to Regional Research 

 Project NE-129 and to Project H-266 of the New Hampshire Agricul- 

 tural Experiment Station. 



Programs of the New Hampshire Agriculture Experiment Station are open to all 

 persons without regard to race, color, national origin or sex. The University of New 

 Hampshire is an Affirmative Action/Equal Opportunity Employer. 



