Chatterjee, S. Conservative estimation of practure toughness of reactor operated cold worked 2r - 2.5% Nb pressure tubes / S. Chatterjee and H. K. Sriharsha - Mumbai : Bhaba Atomic Research Centre, 1999 - 22 p. : frgs, tables ; 28 cm. Subjects--Topical Terms: Nuclear physics‬ Dewey Class. No.: 539.7