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100|  |▼a19970612a19481971k                ea
101|0 |▼aeng
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110|  |▼aaza    0   
200|10|▼aJournal of the Institute of Navigation
207| 0|▼av.1(1948)-v.24(1971)
210|  |▼aCambridge▼aThe Royal Institu-
   |  |te of Navigation
440| 1|▼1011  ▼a0020-3009▼120001▼aJou-
   |  |rnal of nauigation(v.25,1972-)
541|1 |▼a导航杂志
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