00409nam a22001577a 4500 2403 2403 200228b ||||| |||| 00| 0 eng d 623.89 W211 1989 Walling, S. A. Elementary marine navigation 1st ed. Cambridge Cambridge university press 1944 78 p. 3.00 Navigation BK 0 0 ddc 0 623_890000000000000_W211 0 7016 CL CL 1954-03-10 A. H. Wheeler 623.89 W211 01965 2020-02-28 BK