Were the soviets that far ahead? Because the T3 trams from the 60s were already made of composites.
Paper uses wood pulp.
Clothes made of ‘bamboo fiber’ are made of rayon, for example.
Cotton is also normally mercerized [https://en.m.wikipedia.org/wiki/Mercerisation], or treated like Denim, etc.
It’s all made of cellulose at the end of the day.
Also, totally un-recyclable. Good riddance!