1. Enzymatic cleavage of side chains of synthetic water-soluble polymers (pages 2833–2848) J. Drobník, J. Kopeček, J. Labský, P. Rejmanová, J. Exner, V. Saudek and J. Kálal Macromolecular Chemistry and Physics Thanks a lot!
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first generation, price is just $40 off from regular. not that deal