@misc{Hopkins_F.N._F.N,
 author={Hopkins, F.N.},
 howpublished={online},
 publisher={Saint Ives :},
 publisher={IMRAY LAURIE NORIE AND WILSON LTD,},
 language={eng},
 title={F.N Hopkins.},
 title={Norie's Nautical Tables : with explanations of their use /},
}