Chemistry of nebulae around binary post-AGB stars: A molecular survey of mm-wave lines I. Gallardo Cava, V. Bujarrabal, J. Alcolea, M. Gómez-Garrido and M. Santander-García A&A, 659 (2022) A134 Published online: 05 April 2022 DOI: 10.1051/0004-6361/202142339