000 00268 a2200109 4500
082 _a628.51
_bUn3g
245 1 _aGUIDE TO POLLUTION CONTROL IN FERTILIZER PLANTS
260 _aNew York
_bUnited Nations
_c1977
300 _aix,21
964 _gCIRC
997 _aA56525 s C
999 _c462835
_d462835