Wad from Karaganda Region, Kazakhstan
Kazakhstan | |
| Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. |
| Yegorov, B. L., Dora, A. D., & Senderova, V. M. (1970). Melkovite, a new phosphomolybdate from the oxidized zone. International Geology Review, 12(12), 1411-1415. |