2009 · M. A. A. Abd Allah, E. H. Omar, et al. · Journal of Soil Sciences and Agricultural Engineering /Journal of Soil Sciences and Agricultural Engineering · 1
2008 · E. H. Omar, M. A. Abd El-Aziz, et al. · Journal of Soil Sciences and Agricultural Engineering /Journal of Soil Sciences and Agricultural Engineering · 1
2002 · E.H. Omar, M. A. Ghazy, et al. · Journal of Soil Sciences and Agricultural Engineering /Journal of Soil Sciences and Agricultural Engineering · 1
2014 · Cevallos Trelles, Edgar Omar · Repositorio Institucional de la Universidad de las Fuerzas Armadas ESPE (Universidad de las Fuerzas Armadas ESPE)