✦ LIBER ✦

Long-term effect of chemical fertilizer, straw, and manure on soil chemical and biological properties in northwest China

✍ Scribed by Enke Liu; Changrong Yan; Xurong Mei; Wenqing He; So Hwat Bing; Linping Ding; Qin Liu; Shuang Liu; Tinglu Fan

No coin nor oath required. For personal study only.

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