1. Sains 22 1. Matematika 15 College readers 7 History 7 1. Cartography 6 English language 6 Rhetoric 6 mer ... 1. Bencana 5 1. Bumi 4 Mass media 4 1. Lingkungan Hidup 3 1. Sains Fiksi 3 1.Matematika 3 Bencana 3 Intercultural communication 3 Management 3 Maps 3 Psychological aspects 3 1. Astronomi 2 1. Cuaca 2 1. Geologi 2 1. Lingkungan 2 1. Lingkungan hidup 2 1. Listrik 2 1. Management information systems 2 1. Sains Fisika 2 1. Tsunami 2 2. Lingkungan 2 2. Sains 2 3. Maps 2 mindre ...