ISMI Islamic Scientific Manuscripts Initiative

Full reference OpenMind biblio ref
King, David, P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel, and W.P. Heinrichs. 1995. “Rubʿ [Quadrant]”. In Encyclopaedia of Islam, New Edition, 2ndnd ed., 8:574-75. Leiden: E. J. Brill.
 { David King, P. Bearman, Th. Bianquis, C.E. Bosworth, E. van Donzel, W.P. Heinrichs, 1995 #602 }