... The chemical shifts in the 13С NMR spec tra of the copolymers of 1' with 2 are given ... Erin and VM Popov, Khimiya Rastitel'nogo Syr'ya [Chemistry of Plant Raw Materials], 2000, 2, 61 (in ... 7. VV Malyshev, Ekologiya Proizvodstva [Ecology of Produc tion], 2006, 5, 12 (in Russian). ...