“Lettuce (Lactuca Sativa L.) Yield and Yield Components As Affected by Mulching at Teda, Centeral Gondar, Ethiopia”. International Journal of Scientific Research and Management (IJSRM), vol. 6, no. 09, Sept. 2018, pp. AH-2018, https://doi.org/10.18535/ijsrm/v6i9.ah01.