Home › Authors › Ella Balsam 👤 Ella Balsam 3 books Books by Ella Balsam Magnetic results from Huancayo Magnetic results from Huancayo Observatory, Peru, 1945-1947 1951 Magnetic results from Watheroo Magnetic results from Watheroo Observatory, Western Australia, 1945-1947 1951 Magnetic results from Huancayo Magnetic results from Huancayo Observatory, Peru, 1936-1944 1948