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Books about Renling:
[Of genuine used biochemical production technology and application Renling Bo Chemical Industry Press 9787502531058... by REN LING BO (Jan 1, 2000)
Tianjin Water Conservancy the Chi Juanjiu Dongli District. water conservancy (the editor of Wang Renling signature... by TIAN JIN SHI SHUI LI JU SHUI LI ZHI BIAN ZUAN WEI YUAN HUI (Jan 1, 2000)