E. S. . Pandia, A. . Wahyuni, N. Nursamsu, and N. . Manurung, “Validity and practicality of Ecology Project Based Practicum Worksheets to Improve Science Process Skills”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 9, pp. 6918–6924, Sep. 2023.