Practical Manual for GCE A/L Biosystem Technology Teachers
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Item Lesson 06: Determination of pH value of a soil sample using a pH meter(Research Services Centre, Faculty of Science, University of Kelaniya, 2015) Premaratne, W.A.P.J.Item Lesson 05: Determination of water percentage of a soil sample at field capacity(Research Services Centre, Faculty of Science, University of Kelaniya, 2015) Premaratne, W.A.P.J.Item Lesson 04: Determination of soil density and its compaction or porosity(Research Services Centre, Faculty of Science, University of Kelaniya, 2015) Premaratne, W.A.P.J.Item Lesson 03: Determination of different fractions of soil by hydrometer test and textural triangle(Research Services Centre, Faculty of Science, University of Kelaniya, 2015) Premaratne, W.A.P.J.Item Lesson 02: Determination of water percentage in a soil sample by gravimetric analysis(Research Services Centre, Faculty of Science, University of Kelaniya, 2015) Premaratne, W.A.P.J.