Author Details

Daulay, Harmona, <pre id="tw-target-text" class="tw-data-text tw-text-large JgzqYd RES9jf tw-ta" dir="ltr"><span class="Y2IQFc" lang="en">University of Sumatera Utara</span></pre>, Indonesia



Department of Biology, Faculty of Mathematics and Natural Sciences

University of Sumatera Utara

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