000 00643cam a22002291 4500
001 l 30000104
003 DLC
005 20260227111532.0
008 820218s1930 dcu 000 0 eng
010 _al 30000104
035 _a(OCoLC)29100088
040 _aDLC
_cMnU
_dOCoLC
_dDLC
042 _apremarc
050 0 0 _aHD8051
_b.A62 no. 512
110 2 _aNational Safety Council.
245 1 0 _aCode for identification of gas-mask canisters.
260 _aWashington,
_bU.S. Govt. print. off.,
_c1930.
300 _av, 3 p.
_c23 cm.
650 0 _aGas masks.
710 2 _aAmerican Standards Association
740 0 _aGas-mark canisters.
999 _c35979
_d35979