000			00443nam a22001577a 4500
008			230428b |||||||| |||| 00| 0 eng d
040			_aNational Science Library _cNational Science Library
080			_a533.5 _bH9
245			_aVacuum equipment and techniques
260			_aNew York: _bMcGraw Hill Book Company, Inc., _c1949
300			_a449p.
650			_aScience
653			_aPhysics
700			_aGuthrie, A (Ed.)
942			_2udc _cBK
999			_c25683 _d25683