The Aapplication of Cooperation Principles on Bahtsul Masa'il Activities at Islamic Boarding School Darussalam Blokagung: Pragmatic Studies Journal title: International Journal of Social Science And Human Research Authors: M. Riza Azizi, Akhmad Sofyan, Akhmad Haryono, Sukarno, Hairus Salikin Subject(s): Economics, Humanities, Law, Social Sciences, Literature, Sociology of Education, Criminology, Public Administration