By the King : a proclamation for the better making of saltpeter within this kingdomeEngland and WalesCharlesEnglishBookeebo-01471627Imprinted at London : By Bonham Norton and Iohn Bill, Printers to the Kings most Excellent Maiestie, M.DC.XXVI [1627]Saltpeter industry—England—Early works to 1800Nitrogen industries—Early works to 1800Great Britain—History—Charles I, 1625-1649Book