Fig. 5From: Biodeterioration of Roman hypogea: the case study of the Catacombs of SS. Marcellino and Pietro (Rome, Italy)Maximum photosynthetic yields versus time of biofilms treated with 10, 1, 0.1 and 0 (control) % EO mixtures. The timing of the second application is indicated by an arrow. The curves have been constructed with average data and the relative standard errorsBack to article page