00556nam a22001577a 450000500170000000700040001700800040002102000150002504000090004005000230004924501440007226000300021630000230024650501040026965000250037320170721104519.0000000  a9280717332  aUOEL  aQC881.2b.S76 1999  aSynthesis of the reports of the scientific, environmental effects, and technology and economic assessment panels of the Montreal protocol /  aNairobi ;bUNEP ;cc1999.  aix, 160 p. :bill.  aA decade of assessments for decision makers regarding the protection of the ozone layer : 1988-1999  aPhysicsxOzone layer