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- [3] IS ENVIRONMENT-FRIENDLY PAPER FRIENDLY TO THE ENVIRONMENT SVENSK PAPPERSTIDNING-NORDISK CELLULOSA, 1987, 90 (14): : 7 - 7
- [5] On the environment-friendly concrete Chongqing Jianzhu Daxue Xuebao/Journal of Chongqing Jianzhu University, 2006, 28 (05): : 129 - 131