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土壤普查土壤普查县级资料汇总的主要技术环节和方法…… ··…’·········································一2(23)应用和发展土壤普查成果的一条途径····一2(25)谈谈土壤普查工作底图的补测问题······……2(28)布整段?
Soil census soil census county-level data summary of the main technical aspects and methods ... ·································· ··············································································································································································································· 2 · ...... 2 (28) cloth entire section?