Umechuruba, Charles Ikechukwu2026-02-202026-02-201976https://hdl.handle.net/10919/141365v, 50 leavesapplication/pdfenIn CopyrightLD5655.V851 1976.U47Effect of sodium azide on survival of lettuce seeds and Cylindrocladium microsclerotia in soils of different clay contentReport