Shifts in weed and weed seed population under different multiple cropping patterns [microform] - Tavatchai Radanachaless (Quezon City Photoduplication Service. University of the Philippines Library, 1981)
Microfilm reel $e16 mm.
Thesis (M.S.)
Originally published in 1978.
Keywords: Weeds -- Philippines; Weed control research -- Philippines; Cropping systems -- Philippines