Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Hardy, A. C.","World shipping : a note book on 'Seaways and sea trade : and a maritime geography of routes, ports, rivers, canals and cargoes'",Rev. ed,Penguin Books,1941,Penguin special,,,,https://cir.nii.ac.jp/crid/1130282269913691904