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521. Efficiency test of a 125 horse power gas engine Efficiency test of a 125 horse power gas engine Young, Gilbert Amos; Felbaum, Fred William; Chandler, Franklin Fay 1899

522. Efficiency of welds : 2nd half Efficiency of welds : 2nd half Wilson, Henry Volney 1891

523. Efficiency of various yeasts in the fermentation of bread Efficiency of various yeasts in the fermentation of bread Linn, Eva Lenore; Zorns, Daisy Jane 1897

524. Efficiency of the modern electric motor Efficiency of the modern electric motor Cory, Clarence L. 1889

525. Efficiency of the incandescent lamp Efficiency of the incandescent lamp Smart, Richard A. 1892

526. Efficiency of Schenectady No. 2 under different steam pressures Efficiency of Schenectady No. 2 under different steam pressures Green, Carl R. 1898

527. Efficiency of locomotive Schenectady No. 2 under different steam pressures Efficiency of locomotive Schenectady No. 2 under different steam pressures Batten, Percy Haight 1898

528. Efficiency of locomotive Schenectady No. 2 under different steam pressures Efficiency of locomotive Schenectady No. 2 under different steam pressures Sears, Robert Lee 1898

529. Efficiency of locomotive schenectady no. 2 under a different valve setting Efficiency of locomotive schenectady no. 2 under a different valve setting Gee, Norman Edward 1899

530. Efficiency of locomotive Schenectady no. 2 at different speeds of rotation Efficiency of locomotive Schenectady no. 2 at different speeds of rotation Wolgemuth, Lee Edgar; Wickersham, Ralph Stephen; 1898

531. Efficiency of locomotive Schenectady No 2 under different steam pressures Efficiency of locomotive Schenectady No 2 under different steam pressures Aydelott, Chelsea Como 1898

532. Efficiency of carbon, graphite and metallic brushes and commutator compounds Efficiency of carbon, graphite and metallic brushes and commutator compounds Kalinowski, Alexander John 1901

533. Efficiency and regulation test of a Westinghouse rotary converter Efficiency and regulation test of a Westinghouse rotary converter Rolf, A. F.; Simpson, E. L. 1899

534. Efficiency and regulation test of a Westinghouse rotary converter Efficiency and regulation test of a Westinghouse rotary converter Rolf, A. F.; Simpson, E. L. 1899

535. Efficency of separation by hand cream separators under varying conditions Efficency of separation by hand cream separators under varying conditions Beckman, John Fred 1904

536. Effects of moisture changes upon stomata Effects of moisture changes upon stomata Dorner, Herman B. (Herman Bernard), 1878-1955 1900

537. Effects of drought upon certain plants Effects of drought upon certain plants Cunningham, Clara A. 1896

538. Effects of different degrees of throttling upon the cylinder efficiency of a locomotive Effects of different degrees of throttling upon the cylinder efficiency of a locomotive Henry, J. M.; Cunningham, James L. (James Latham), 1874- 1900

539. Effects of changes in the valve proportion upon the efficiency and power of locomotive Schenectady no. Effects of changes in the valve proportion upon the efficiency and power of locomotive Schenectady no. 1. Wilson, Alexander Massey 1903

540. Effects of case-hardening in cast iron Effects of case-hardening in cast iron Doty, Leman K. 1894
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results 521-540 of 860 item(s)  page 27 of 43 : ( <<  21  22  23  24  25  26  27  28  29  30  >> ) :: previous : next