TY - RPRT TI - Ion engine thrust vector study, phase 2 Quarterly report AU - Amboss, K. AU - Brewer, G. R. AU - King, H. AU - Nudd, G. AU - Seliger, R. PY - 1968 UR - https://ntrs.nasa.gov/citations/19690007459 ID - 19690007459 ER -