STUDIES ON WEED SEED DYNAMICS IN SOIL SEED BANK OF RICE BASED CROPPING SYSTEM OF PAKISTAN Khan Bahadar Marwat Marwat Haroon Khan MUHAMMAD AZIM KHAN KHAN GUL HASSAN DOI: https://doi.org/10.28941/pjwsr.v9i3%20and%204.120 PDF Published 2003-09-01 Issue Year 2003, Volume 9 , Issue 3 and 4 Section Articles