Niobium, tantalum, molybdenum and tungsten : Report of a conference held in the University of Sheffield, 20th-22nd September, 1960, and organized by the Dept. of Metallugy /

av Quarrell, Arthur George, 1910-
Publicerad 1961

The chemistry of niobium and tantalum,

av Fairbrother, F. (Fred)
Publicerad 1967

Tantalum and niobium.

av Miller, George Leslie
Publicerad 1959