000 00309 a2200133 4500
001 1677
008
082 _a333.953416
084 _aQdd.11
245 _aAnnual report 1991
260 _aRom
_bIBPGR
_c1992
300 _a64 s. : ill.
653 _aANNUAL REPORTS IBPGR
999 _c10678
_d10678