More pictures of ligins
![PDF] RECENT ADVANCES ON LIGIN-DERIVED POLYURETHANE POLYMERS | Semantic Scholar](https://i0.wp.com/d3i71xaburhd42.cloudfront.net/570e744e365ca85be3e458226919a1c606f183b5/4-Figure4-1.png)
![Preparation and microbial decomposition of synthetic [14C]ligins. - Abstract - Europe PMC](https://i0.wp.com/europepmc.org/articles/PMC432799/bin/pnas00050-0051.tif)
ligins
![PDF] RECENT ADVANCES ON LIGIN-DERIVED POLYURETHANE POLYMERS | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/570e744e365ca85be3e458226919a1c606f183b5/4-Figure4-1.png)
