000 00203 a2200085 4500
020 _a9780431013121
082 _aJ 551.511 HARM
100 _aHarman ,R
_9187305
245 _aCarbon -Oxygen and Nitrogen Cycles
999 _c764945
_d764944
942 _w392
_xVeronica Mrwebi
_y392
_zVeronica Mrwebi