TY - RPRT TI - Neptune's cloud structure in 1989 - Photometric variations and correlation with ground-based images AU - Lockwood, G. W. AU - Thompson, D. T. AU - Hammel, H. B. AU - Birch, P. AU - Candy, M. PY - 1991 UR - https://ntrs.nasa.gov/citations/19910050461 ID - 19910050461 ER -