000 00528nam a2200193Ia 4500
008 230524s9999 xx 000 0 und d
040 _cUDSM
050 _aEAF FOS F21.I4
245 0 _aImproving productivity in less favourable environments
260 _aRome
260 _bFood and Agriculture Organization (FAO)
260 _c1972
300 _a81p.
300 _c28cm.
650 _aProductivity in less favourable environments
700 _aill.
942 _2Library of Congress Classification
942 _cReport
999 _c40144
_d40144