Unclassified U.S. Atomic Energy Commission reports on the metallurgy of zirconium and hafnium /

"TID-3508 Metallurgy and Ceramics."

Distillation separation of zirconium and hafnium : summary report for February 14, 1949 to March 31, 1950 /

"Contract No. AT(30-1)-534."

The first spectrum of hafnium (Hf I) /

Mode of access: Internet.

Hafnium cross sections and their temperature dependence,

"Contract W-7 405-Eng. 36 with the U. S. Atomic Energy Commission."

Zirconium and hafnium, a bibliography,

"Work performed under Contract no. AT-(30-1)-534."