by John Perry ; at the Museum of practical geology, Jermyn street, February and March 1899, with certain exercises supposed to be worked after every lectureH.M.S.O1910
by John Perry ; at the Museum of practical geology, Jermyn street, February and March 1899, with certain exercises supposed to be worked after every lecturePrinted for His Majesty's Stationery Office by Wyman1907
by John Perry ; at the Museum of practical geology, Jermyn street, February and March 1899, with certain exercises supposed to be worked after every lecturePrinted for H.M. Stationery Office by Wyman1899