- FondsYapp - Papers and photographs of R. H. (Harry) Yapp
- Series5 - Offprints
- 3 more...
- Item4 - Sketches of vegetation
- Item5 - Stratification in the vegetation of a marsh
- Item6 - Spiraea ulmaria L.
- Item7 - Salt marshes of the Dovey estuary
- Item8 - Dovey salt marshes in 1921
- Item9 - Concept of habitat
- Item10 - Inter-relations of plants in vegetation
- Item11 - Article by F.J. Richards