STUDY ON LAND GRADING OF GUANXIAN CITY PROPER OF SHANDONG PROVINCE
Received date: 1998-03-17
Revised date: 1999-03-14
Online published: 1999-05-20
Zhang Erxun . STUDY ON LAND GRADING OF GUANXIAN CITY PROPER OF SHANDONG PROVINCE[J]. SCIENTIA GEOGRAPHICA SINICA, 1999 , 19(3) : 258 -264 . DOI: 10.13249/j.cnki.sgs.1999.03.258
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