[1]
PiƱol, C.M.N. and Tadena, M.D. 2005. Estimating the degree of coffee rust infection (Hemileia vastatrix) in coffee leaves. Proceedings of the Samahang Pisika ng Pilipinas, 23(1), SPP-2005-PA-07. URL: https://proceedings.spp-online.org/article/view/SPP-2005-PA-07.