| Tag | Indicator | Content |
|---|---|---|
| 020 | ## | $a0-89118-104-0 |
| 041 | ## | $aEnglish |
| 110 | ## | $aEditors P. Maccarthy ... [et. al.] |
| 245 | 00 | $aHUMIC substances in soil and crop sciences : selected reading : proceedings of a symposium $cEditors P. Maccarthy ... [et. al.] |
| 260 | ## | $aMadison $bAmerican Society of Agronomy $c1990 |
| 300 | ## | $axvii, 281 p. $bfig. $c23 cm |
| 500 | ## | $aIncludes index. |
| 650 | 00 | $aHUMUS, SOILS |