Nayakekorala, H.B.Karunadasa, H.D.2020-09-022020-09-021984Tropical Agriculturist, 140:p.87-92https://dl-doa.nsf.gov.lk/handle/1/2651SOYBEANSoybeanReddish brown earthsRootsPenetration and activity of soybean roots in reddish brown earthsArticle