El-Sheref, G., Awadalla, H., Mohamed, G. (2019). 'Influence of Organic Manure, Natural Rocks and Putrescine on Yield and Quality of Sweet Basil (Ocimum basilicum L.) Grown in Sand Soil', Journal of Soil Sciences and Agricultural Engineering, 10(12), pp. 747-758. doi: 10.21608/jssae.2019.79573