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N B1 The Notebooks of Leonardo Da Vinci — Complete The Notebooks of Leonardo Da Vinci — Complete da Vinci Leonardo H B1 How it Works How it Works Archibald Williams B B1 The book of wonders : gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer... The book of wonders : gives plain and simple answers to the thousands of everyday questions that are asked and which all should be able to, but cannot answer... S B1 Steam, Its Generation and Use Steam, Its Generation and Use Babcock & Wilcox Company P B1 Practical Mechanics for Boys Practical Mechanics for Boys James Slough Zerbe C B1 Concrete Construction: Methods and Costs Concrete Construction: Methods and Costs Halbert Powers Gillette and Charles Shattuck Hill M B1 My Life and Work My Life and Work Henry Ford and Samuel Crowther C B1 Color Images from Mars Rovers Color Images from Mars Rovers Bob Webster B B1 The Boy Electrician The Boy Electrician Alfred Powell Morgan D B1 De Re Metallica, Translated from the First Latin Edition of 1556 De Re Metallica, Translated from the First Latin Edition of 1556 Georg Agricola M B1 Mechanical Drawing Self-Taught Mechanical Drawing Self-Taught Joshua Rose E B1 Electricity for Boys Electricity for Boys James Slough Zerbe P B1 The Progress of Invention in the Nineteenth Century. The Progress of Invention in the Nineteenth Century. Edward W. Byrn O B2 Ocean Steam Navigation and the Ocean Post Ocean Steam Navigation and the Ocean Post Thomas Rainey P B1 Passages from the Life of a Philosopher Passages from the Life of a Philosopher Charles Babbage B A2 The boy mechanic, book 3 : 800 things for boys to do The boy mechanic, book 3 : 800 things for boys to do H B1 The handbook of soap manufacture The handbook of soap manufacture W. H. Simmons and H. A. Appleton I B2 The inventions, researches and writings of Nikola Tesla The inventions, researches and writings of Nikola Tesla Thomas Commerford Martin E B2 Edison: His Life and Inventions Edison: His Life and Inventions Frank Lewis Dyer and Thomas Commerford Martin S B1 Steam-ships : The story of their development to the present day Steam-ships : The story of their development to the present day R. A. Fletcher D B1 A Dictionary of Arts, Manufactures and Mines A Dictionary of Arts, Manufactures and Mines Andrew Ure P B1 The Pencil of Nature The Pencil of Nature William Henry Fox Talbot D A2 The Dyeing of Cotton Fabrics: A Practical Handbook for the Dyer and Student The Dyeing of Cotton Fabrics: A Practical Handbook for the Dyer and Student Franklin Beech