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Degradation behavior of PPC/PBS as urea coating in soil iPBS-PCR Used for Cloning and Analysis of Long Terminal Repeat Transposons in Tree Peony (Paeonia) The Status and Trend of Natural Fiber/Biodegradable Plastic Bio-Composites A Preliminary Study on the Biological Function of a Gene p17 Located on a Linear Plasmid pBSSB1 of Salmonella enterica serovar Typhi Preparation and characterization of biodegradable polymer-coated urea