401
Selected tables of atomic spectra : A. Atomic energy levels - second edition. B. Multiplet tables ; Si II, Si III, Si IV ; data derived from the analyses of optical spectra /
Book
...National standards reference data series / National Bureau of Standards ;...
402
National Standard Reference Data System : plan of operation /
Book
...National standards reference data series / National Bureau of Standards ;...
403
Chemical processing and equipment
Book
1955
...Selected reference material on atomic energy...
404
Research reactors /
Book
1955
...Selected reference material on atomic energy...
Table of Contents 
405
Neutron cross sections.
Book
...Selected reference material on atomic energy....
406
Reactor handbook engineering.
Book
1955
...Selected reference material / United States Atomic Energy Program....
407
Medical sciences international Who's Who. 2. M - Z.
Book
...Longman reference on research....
408
Medical sciences international Who's Who. 1. A - L.
Book
...Longman reference on research....
409
Thermodynamic properties of methane.
Book
...National standard reference data service of the USSR ;...
Table of Contents 
410
Nuclear power reactors in the world.
Book
...Reference data series / IAEA ;...