Labels:audio cd | crt screen | monitor | table OCR: Global Change Indicators Global Mea CO Concentratior 195 1970 Select data for Climate study Monthly means of over 70 physical parameters- Land, Ocean Sun Cryosphere Biosphere Atmosphere-- For Basic Research and Teaching Purposes. NASA Goddard DAAC Science Data Series Earth Science Enterprise Program National Aeronautics and Space Administration NP 1998 06) -029 GSFC Concentration
