AND代表"并且"；OR代表"或者"；NOT代表"不包含" (注意必须大写,运算符两边需空一格)
范例一：( IKTE=图书馆学 OR IKST=情报学) AND IKCR=范并思
范例二：IKTS=计算机应用与软件 AND (IKST=C++ OR IKST=Basic) NOT IKIS=西华师范大学
简 介：
New Water Act in Poland – Changes and DilemmasEdward Pierzgalski (17-22)
Incorrect Methodology for Agri-Environmental Measure - Multi...Lucia Palšová (12-16)
Usage of Agricultural Land for Non-Agricultural Purposes in ...Ina Melišková (7-11)
Sediments as a Part of the Soil Protection LegislationĽuboš Jurík (1-6)
Retraction (i-i)