00503nam a2200181Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 77.01 WAL Walls, H. J. 3676 How photography works H. J. Walls London The Focal Press 1959 352p. NASA thesaurus Photographic processing Photography BK 1932 1932 0 0 0 0 BAN BAN GEN 0000-00-00 29.40 0 77.01/ WAL 2124 2021-11-05 29.40 0000-00-00 BK Rs. 29.40