3 Medical diving books priced for all three.
 
'The Ship's Medicine Chest and Medical Aid at Sea' by the US Department of Health, Education and Welfare. Printed in 1978. Measures 27cm x 21 x 3
 
'Decompression sickness Vol 1' by B.A Hills, professor of Physiology, University of Texas. Printed in 1977. Measures 26cm x 19 x 2.5
 
'Offshore Medicine' - Medical Care of Employees in the Offshore Oil Industry, edited by R.A.F Cox. Printed in 1982. Measures 25cm x 17 x 2