TY  - BOOK
AU  - May,E.R.
TI  - The theory and practice of controllable pitch propellers / 
T2  - Marine engineering practice. Vol. 2, pt 13
SN  - 0900976624
U1  - 623.872361  23 
PY  - 1981///.
CY  - London : 
PB  - Inst. of Marine Engineers, 
KW  - Variable pitch propellers.
ER  -