Management level stability 
Wardle, B.J. 
 -  Brown, Son & Ferguson, Ltd.  2021 
 - vii, 263 pages 
978-1-84927-095-3
Seamanship -- Study and teaching -- handbooks, manuals, etc.
M 623.88 W266 2021
                        978-1-84927-095-3
Seamanship -- Study and teaching -- handbooks, manuals, etc.
M 623.88 W266 2021