found: Văn học yêu nước và cách mạng Hà Nam Ninh, 1981-
found: Gaz. of Vietnam, 1986(Hà Nam Ninh, Tỉnh [Hà Nam Ninh brief], ADM1 20°20ʹN, 106°00ʹE)
found: Ninh Bình, lịch sử kháng chié̂n chó̂ng Mỹ cứu nước, 1954-1975,1994.
found: Làng văn, 2/92:(Hà Nam Ninh changed back to Nam Hà and Ninh Bình provinces)
found: Wikipedia, Vietnamese version, viewed 14 July 2021:Hà Nam Ninh (Hà Nam Ninh province was established on December 27, 1975 by merging the provinces of Nam Hà and Ninh Bình; on December 26, 1991, Hà Nam Ninh was re-divided into the provinces of Nam Hà and Ninh Bình)
notfound: GEOnet, 14 July 2021