00369nam a22001457a 4500008004500000020001500045082001700060100001800077245002300095260004300118300001000161650002000171650001200191650002000203241111b     1981      ||||| |||| 00| 0 eng d  a0710065221  a623.894bGRA  aGrant, G.A.A.  aThe ship's compass  aLondonbRoutledge and Kegan Paulc1981  a602p.  aList of symbols  aPreface  aAcknowledgement