Bagua zhou tu di li yong diao cha - Li, Wenhu; Zhang, Shuzhi (Cheng wen chu ban she, 1977)
Colophon title. - Each work has a separate t.p. - "Di zheng xue yuan zhi lun wen ... jun wei shou xie gong kai ... nai ding yue ying yin.". - Title questionable
Includes bibliographical references (p. 28889-28890)