Tuttle, H. W., & others, a. (1969). Price Indexes for 1969. U.S. Periodicals and Serial Services.
Cita Chicago Style (17a ed.)Tuttle, Helen Welch, y and others. Price Indexes for 1969. U.S. Periodicals and Serial Services. 1969.
Cita MLA (9a ed.)Tuttle, Helen Welch, y and others. Price Indexes for 1969. U.S. Periodicals and Serial Services. 1969.
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