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G.C.E. A/L Biology Practical Handbook developed to support you in advancing students to fluency in science. We have worked with .This Practical Handbook has been developed to support you in advancing your students to fluency in science. We have worked with teachers, university lecturers G.C.E A/L Biology - Practical HandBook, biology practical book sinhala medium, biology Notes, Career guide for school leavers and lot more Articles.