PETECH L. China and Tibet in the early 18th century History of the establishment of Chinese protectorate in Tibet PETECH L. - Leiden E. J. Brill 1950 - 287p. cm. - CEL . Standard No.: 13,515 Source: Textual Subjects--Topical Terms: CELChina - Foreign relations - Tibet Dewey Class. No.: V41:19498,(zB).L50, J0