Treatise on elaborating the nature of the psyche (sems) in terms of creativity and onthological differences., Text acquired in Tibet by HRH Prince Peter of Greece and Denmark (1908-1980)., Philosophy text recovered by gter rGod kyi ldem 'phru can og Catalogue of Tibetan manuscripts and xylographs by Hartmut Buescher and Tarab Tulku. Copenhagen: Curzon – Det Kongelige Bibliotek, 2000. Vol. 1. p. 306