Chromium.
Udy, M.J.
Chromium. - New York Reinhold [s.f.]. - 2v. - American chemical society monograph series, no. 132 . - American chemical society monograph series, no. 132 .
Chromium. - New York Reinhold [s.f.]. - 2v. - American chemical society monograph series, no. 132 . - American chemical society monograph series, no. 132 .