Chemistry and the Chemical Industry in the 19th Century : The Henrys of Manchester and Other Studies Hills, Richard L. Farrar, Wilfred Vernon 9780860786306 Variorum Collected Studies Innbundet 19.06.1997 Engelsk I salg
Power from Steam : A History of the Stationary Steam Engine Hills, Richard L. 9780521458344 Heftet 19.08.1993 Engelsk Produseres på bestilling
