Showing 381 - 400 results of 976 for search '', query time: 0.30s Refine Results
  1. 381
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    Invention and the patent system by Gilfillan, S. Colum, 1889-

    Published 1964
    Book
  4. 384

    Technology assessment and forecast : third report.

    Published 1974
    Government Document Book
  5. 385
  6. 386
  7. 387

    Technical illustration / by Thomas, T. A.

    Published 1978
    Book
  8. 388

    Blueprint reading for the construction trades / by Bellis, Herbert F.

    Published 1978
    Book
  9. 389

    Sheet metal drafting / by Betterley, Melvin L.

    Published 1978
    Book
  10. 390
  11. 391
  12. 392
  13. 393

    Careers of danger and daring, by Moffett, Cleveland, 1863-1926

    Published 1901
    Book
  14. 394
  15. 395

    The creative engineer : the art of inventing / by Kock, Winston E.

    Published 1978
    Book
  16. 396

    The household pollutants guide /

    Published 1978
    Book
  17. 397

    Electronic drawing and technology / by Lopez, Ulises M., 1924-

    Published 1978
    Book
  18. 398

    Popular mechanics.

    Published 1959
    Microfilm Journal
  19. 399

    Industrial research/development.

    Journal
  20. 400

    From sundials to atomic clocks : understanding time and frequency / by Jespersen, James

    Published 1977
    Government Document Book