"G. dates this ms. to the seventh century. Ofuchi_1978:
pp.209-14 notes variants between this text and the corresponding segment in HY682:
HY 682 Dao de zhen jing zhu 1.3b2-2.3a8, and collates it with the Heshanggong commentaryin HY711:
HY 711 Dao de zhen jing xuan de zuan shu, compiled by Qiang Siqi, with a preface contributed in 920 by the renowned Lingbao codifier Du Guangting (850-933). Additional fragments of the Heshanggong Daodejinginclude Or.8210/S.3926, Or.8210/S.4681:
V and P.2639."
(JB)