blended learning 1. BENCANA - PELAYANAN SOSIAL<BR>2. DISASTER - SOCIAL SERVICES 21st-century learning CSR Disclosure Earnig Per Share Firm Characteristics H Social Sciences H Social Sciences (General) PLSBT Sustainability Reporting and a phenomenology cassava waste community learning center design electronic learning material facilitating learning hasil belajar heavy metal higher order thinking skills (HOTs) industrial pollutant kapita selekta hasil penelitian kurikulum langmuir and freundlich models learning resource lifelong learning natural adsorbent opinion pendidikan olahraga penelitian tindakan kelas pocket book research scientific journal scout teknologi pendidikan