Harvard College Observatory. Near VG, cover tips worn and torn. Good-some wrinkles on cover. Memoirs of the Commonwealth Observatory Mount Stromlo, Canberra, Australia. In the Proceedings of the American Philosophical Society, Vol.
Whole issue has several articles.
Good, some light wear and soiling. Jahn, Gustav Adolph. 2 volumes bound in one, 277pp., 450pp. Later rebinding in spine and tips cloth. Good, small tear on spine, front hinge cracking, text tight, clean with occasional light browning.