Sinan Samir Juma HII. Effect of Mineral Fertilization and Humic Acids on Availability of NPK in Soil and Maize Growth. Annals of RSCB [Internet]. 2021Jun.14 [cited 2024Apr.26];25(6):11414-8. Available from: https://www.annalsofrscb.ro/index.php/journal/article/view/7651