Sumie Watanabe
Scholars of the Ngor Monastery belonging to the Sa skya School of Tibetan Buddhism started to compose a systematic work of theories and practices of Indian and Tibetan mandalas in 1870 and finished its publication by 1894. The title of this work is the rgyud sde kun btus (collection of the Tantras), which consists of thirty-two volumes. The work was reprinted in India during 1971 and 1972. Probably shortly after the completion of the compilation of texts at the ...