Soil classification and compaction tests Classification and comparison 室内土工试验手册.第1卷,土的分类和击实试验.Volume Ⅰ,Soil classification and compaction tests Etiology, classification and conservation of fractured tooth On the classification of company litigation dewey decimal classification and relative index Comparison, classification and direction Classification and Biology Classification and nomenclature of viruses Clinical classification in orthopaedics