Chemical survey of Class I protostars with the IRAM-30 mS. Mercimek, C. Codella, L. Podio, E. Bianchi, L. Chahine, M. Bouvier, A. López-Sepulcre, R. Neri and C. CeccarelliA&A, 659 (2022) A67DOI: https://doi.org/10.1051/0004-6361/202141790