Pritsana Piyaphan. 1999. An investigation of the significance of endogenous prolactin in the regulation of calcium metabolism in young and nonmated mature wistar rats - a longitudinal study. Faculty of Graduate Studies, Mahidol University;

Pritsana Piyaphan. An investigation of the significance of endogenous prolactin in the regulation of calcium metabolism in young and nonmated mature wistar rats - a longitudinal study. . Bangkok:Mahidol University, 1999.

Pritsana Piyaphan. (1999) An investigation of the significance of endogenous prolactin in the regulation of calcium metabolism in young and nonmated mature wistar rats - a longitudinal study . Mahidol University/Bangkok.