Determination of post-seeding period of weed-free field condition in upland crops. The proceeding I of the 12th Asian-Pacific Weed Science Society Conference, pp.207-211 (Aug. 1989). 1989
Determination of post-seeding period of weed-free field condition in upland crops. The proceeding I of the 12th Asian-Pacific Weed Science Society Conference, pp.207-211 (Aug. 1989). 1989