Authors: Stephen van Dulken

  • Inventing the 20th Century 100 Inventions that Shaped the World — Stephen Van Dulken

    Inventing the 20th Century 100 Inventions that Shaped the World — Stephen Van Dulken

  • British Patents of Invention, 1617-1977: A Guide for Researchers — Stephen van Dulken

    British Patents of Invention, 1617-1977: A Guide for Researchers — Stephen van Dulken