CHEMICAL CONTROL OF CANADA THISTLE CRISIUM ARVENSE (L.) SCOP R. K. BHATIA BHATIA K. S. SANDHU SANDHU R.S. BRAR KHURAM SAEED DOI: https://doi.org/10.28941/pjwsr.v1i1.46 PDF Published 1988-03-01 Issue Year 1988, Volume 1 , Issue 1 Section Articles