Llera, B.F.D. et al. 2022. Growth, yield and microbial contamination of lettuce (Lactuca sativa L.) grown under two types of cultivation system as influenced by different organic fertilizers. Annals of Tropical Research. 44, 2 (Dec. 2022), 150–162. DOI:https://doi.org/10.32945/atr4429.2022.