Standard test mthod for size-differential counting of particles and fibers released from cleanroom wipers using optical and scanning electron microscopy : Designation: E 2090 - 06 - Estados Unidos : - 8 p. : il.; 28 cm. BK 545 Materias--Términos Generales: Designation: E 2090 - 06--Norma No. De Clasificación Dewey: 669.802 8 S73