Selenium Cells - The Construction, Care and Use of Selenium Cells With Special Reference to the Fritts Cell #261121 5,85€
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The Berlin-Zossen Electric Railway Tests of 1903 - A Report of the Test Runs Made on the Berlin-Zossen Railroad in the Months of September to November 1903 #254857 6,85€
A Practical Manual of Autogenous Welding (Oxy-Acetylene) - With a Chapter on the Cutting of Metals With the Blowpipe #252596 7,85€
Agricultural Woodworking - A Group of Problems for Rural and Graded Schools, Agricultural High Schools and the Farm Workshop #251663 6,85€
