00498nam a2200181Ia 4500008004000000041000800040082001100048100003000059245002300089260002600112300000700138650001200145650001100157690001200168906001100180999001900191952010600210210210b1961   xxu||||| |||| 00| 0 eng d  aeng  a539/15  aCLARK (John A) and others  aEnergy and engines  aLondonbLongmanc1961  a72  aengines  aEnergy  aPhysics  a009031  c126743d126743  001040728PhysicsaALbALd2021-02-17g0.00l0o539/15p009031r2021-02-17 00:00:00w2021-02-17yBK