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Tag Indicator Content
020 ## $a92-5-100510-9
041 ## $aEnglish
100 0# $aW. Flagi$a B. Nagar$a H.Sochtig$a C. Tietjen
245 00 $aOrganic materials and soil productivity $cFAO
260 ## $aRome $bFAO $c1977
300 ## $avii, 119 p. $bfig., table $c27 cm
440 #0 $aFAO Soil bulletin $c35