OPEN University of Sri Lanka
Course of study leading to the degree of bachelor of science level three botany- - Nugegoda The Open Unviersity of Sri Lanka 1986 - 107 p.
139183
Plant physiology
571.2 / OPE
Course of study leading to the degree of bachelor of science level three botany- - Nugegoda The Open Unviersity of Sri Lanka 1986 - 107 p.
139183
Plant physiology
571.2 / OPE