Bioconversion of Some Agro-Residues into Organic Acids by Cellulolytic Rock-Phosphate-Solubilizing <i>Aspergillus japonicus</i> oleh Samir A. Mahgoub, Elmadawy G. A. Kedra, Hassan I. Abdelfattah, Howaida M. Abdelbasit, Soha A. Alamoudi, Diana A. Al-Quwaie, Samy Selim, Salam S. Alsharari, Wesam I. A. Saber, Rasha M. El-Mekkawy