00801cam a22002654a 450000100060000000300110000600500170001700800410003404000270007504100080010204400080011008000230011811000340014124501390017525000120031426000290032630000190035565000220037465000080039665000300040465000320043465000270046665000320049365500100052538854AR-SsjUBGM20251206163721.0250720s1954    xxk           000 0 eng d  aAR-SsjUBGMcAR-SsjUBGM0 aeng  axxk  a025.45:678/679 CDU2 aBritish Standards Institution10aUniversal Decimal Classification :bclass 678 macromolecular materials, 679 industries based on stone and other processable materials.  a4th ed.  aLondon :bB.S.I.,c1954.  a35 p. ;c28 cm 4aBibliotecología 4aCdu 4aClasificaciones decimales 4aMateriales macromoleculares 4aMateriales procesables 4aSistemas de clasificación 4aLibro