Parsec scale CO depletion in KAGONMA 71, or a star-forming filament in CMa OB1. - Handa, T.; Hirata, Y.; Murase, T.; Nishi, J.; Shimajiri, Y.; Omodaka, T.; Nakano, M.; Sunada, K.; Ito, T.; Chibueze, J. O. (Proceedings of the International Astronomical Union, 2023)