TY - JOUR AU - J. Beckers AU - H. Mauter AU - G. Mann AU - D. Brown BT - Solar Physics DA - 1972-07 DO - 10.1007/BF00155745 PY - 1972 SP - 81 EP - 85 T2 - Solar Physics TI - High resolution spectroscopy of the disk chromosphere I. Observing Procedures UR - http://link.springer.com/10.1007/BF00155745 VL - 25 SN - 0038-0938 ER -