Hay, Ian M, Unity & purity : keeping the balance / [print] by Ian M. Hay. - Summer Hill, N.S.W. ; Cedar Grove, New Jersey : SIM International, (c)1983. - 60 pages ; 18 cm. ISBN: 9780919470064 LCCN: 83061342 Subjects--Corporate Names: Sudan Interior Mission. Subjects--Topical Terms: Christian union. LC Class. No.: BX8.H412.U558 1983 BX8