1
Cryogenic Helium Refrigeration for Middle and Large Powers [E-Book] /
2
Helium cryogenics /
Book
Subject (ZB): ...cryogenics...
Table of Contents 
3
Argon, helium and the rare gases. 2. production, analytical determination, and uses : the elements of the helium group /
Book
Subject (ZB): ...cryogenics...