Search History  Select to load keywords (author equals "ชัชวาล ใจซื่อกุล") AND (author equals "มารุต เฟื่องอาวรณ์") AND (subject equals "Biodiversity conservation") AND (subject equals "Biodiversity") (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "Academic achievement") AND (subject equals "คณิตศาสตร์ -- การศึกษาและการสอน (มัธยมศึกษา)") AND (dateIssued equals "[2540 TO 2549]") AND (subject equals "Mathematics -- Study and teaching (Secondary)") (subject equals "Social Sciences") AND (subject equals "Other service activities") AND (subject equals "Basic / broad general programmes") AND (dateIssued equals "2023")