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Tag Indicator Content
020 ## $a92-5-102154-6
041 ## $aEnglish
100 0# $aPaul W.Unger
245 00 $aTillage systems for soil and water conservation $cFAO
260 ## $aRome $bFAO $c1984
300 ## $axvi, 278 p. $bfig., table $c29 cm
440 #0 $aFAO Soil bulletin $c54