FADHEL KHALEF, Wesan. Effect of interactions between nitrogen fertilizer (urea) and time periods on the growth of algae Chroococcus sp. University of Thi-Qar Journal of Science, University of Thi-Qar, Thi-Qar, Iraq, v. 7, n. 1, p. 57–61, 2019. DOI: 10.32792/utq/utjsci/v7i1.250. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/250.. Acesso em: 31 mar. 2025.