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1by Heard, Richard W., Price, W. Wayne, Knott, David M., King, Rachael A., Allen, Dennis M.
Published 2006monograph bibliotecaUNESCO -
2by Heard, Richard W., King, Rachael A., Knott, David M., Thoma, Brent P., Thornton-DeVictor, Susan
Published 2007monograph bibliotecaUNESCO