TY - GEN AB - Heavy Duty Oils. July 1947. LIEUTENANT-COMMANDER (E) E. TYRRELL, R.N. DA - 1947 ID - 7775 JF - Journal of Naval Engineering L1 - https://library.imarest.org/record/7775/files/v01b2p02a.pdf L2 - https://library.imarest.org/record/7775/files/v01b2p02a.pdf L4 - https://library.imarest.org/record/7775/files/v01b2p02a.pdf LK - https://library.imarest.org/record/7775/files/v01b2p02a.pdf N2 - Heavy Duty Oils. July 1947. LIEUTENANT-COMMANDER (E) E. TYRRELL, R.N. PY - 1947 T1 - Heavy Duty Oils TI - Heavy Duty Oils UR - https://library.imarest.org/record/7775/files/v01b2p02a.pdf VL - 1 Y1 - 1947 ER -