2014-06-102014-06-101993https://dl-cri.nsf.gov.lk//handle/1/4033enPhysiological studiesGalium aparineChromolaena odorataPhysiological studies on growth and development of weed species, with particular reference to Galium aparine L (Cleavers) and Chromolaena odorata (L.)ThesisPhDGUN g-1993University of Wales, UK