TY - GEN DA - 1923 ID - 10387 JF - Papers On Engineering Subject L1 - https://library.imarest.org/record/10387/files/v2b05p06.pdf L2 - https://library.imarest.org/record/10387/files/v2b05p06.pdf L4 - https://library.imarest.org/record/10387/files/v2b05p06.pdf LK - https://library.imarest.org/record/10387/files/v2b05p06.pdf PY - 1923 T1 - A Rule for the Width of Valve Seatings TI - A Rule for the Width of Valve Seatings UR - https://library.imarest.org/record/10387/files/v2b05p06.pdf VL - 2 Y1 - 1923 ER -