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Assessing the Validity and Reliability of Contingent Values: A Comparison of On-Site Users, Off-Site Users, and Non-users
Whitehead, John C., (1995)
Willingness to Pay for a Saltwater Recreational Fishing License: - A Comparison of Angler Groups
Whitehead, John C., (2001)
WILLINGNESS TO PAY FOR AGRICULTURAL RESEARCH AND EXTENSION PROGRAMS
Clifford, William B., (2001)