TY - BOOK AU - Harris, R. A., ed. AU - Moreno-Insertis, ed. AU - Priest, E. R., ed. TI - A Crossroads for european solar and heliospheric physics: recent achievements and future mission possibilities T2 - ESA SP-417 SN - 92-9092-668-6 PY - 1998/// CY - Noordwijk PB - European Space Agency KW - Solar Physics ER -