000			00695 a2200265 4500
001			30944
020			_a8
041			_aeng
080			_a621.56/.59:621.317.3 Ref:80
245			_aRefrigeration for cryogenic sensors and electronic systems : proceedings of a conference, Boulder, Oct. 6-7, 1980 / edited by J.E. Zimmerman, D.B. Sullivan and S.E. McCarthy
250			_a
260			_aWashington, D.C.
260			_bNBS,
260			_c1981
300			_avi,217 p.
300			_c27 cm
490			_a
100			_a
700			_a
650			_a
650			_aRefrigeration and refrigerating machinery-Congresses
650			_aCryoelectronics-Congresses
942			_cBK
942			_2UDC
999			_c83959 _d83959