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| NONDESTRUCTIVE INSPE-CTION OF CEMENT STRU-CTURAL COMPONENTS AND QUALITY OF PILE FOUNDA-TION WITH THE ELASTIC WAVE METHOD |
| Liu Kanghe, Wang Xiaoqi |
| Tianjin surneying and Designing Institute, Ministry of Water Conservancy and Electic Power |
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Published: 24 February 1992
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