TY  - BOOK
AU  - Lounasmaa O V
TI  - Experimental principles and method below 1k
U1  - C9D1,4:7, L4 
PY  - 1974///
CY  - New York    
PB  -  Academic Press       
KW  - Low temperature physics
N1  - Appendix 285-289p
ER  -