Gas Engine Manual. a practical treatise, relating to to the theory...
"A complete study of the gas engine problem would involve consideration of the two general classes of motors operated by the expansive energy of combustible gases, namely - piston engines with reciprocating action, and turbine engines with rotary motion." Воспроизведено в оригинальной авторской орфографии (издательство "Theo. Audel & Co. publishers").
