00868nam0-22002891i-450-990000075900403321000007590FED01000007590(Aleph)000007590FED0100000759020011111d--------km-y0itay50------baitay-------001yyJubilee book of the national physical laboratoryJohn Langdon Davies.LondonHis Majesty's stationery office1951103 p.ill.21 cmGran BretagnaLaboratorio nazionale di fisica506Langdon-Davies,John5142ITUNINARICAUNIMARCBK99000007590040332113 G 01 0723045FINBCFINBCJubilee book of the national physical laboratory110394UNINAING01