- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- Wiley Online Library
- The European Palm Society
- Sussex Research Online
- Phosphorus in Soils and Plants
- ORCA - Cardiff University
- Open Access Repository of ICRISAT
- ISpatula
- International Plant Nutrition Institute
- HKBU Institutional Repository
- CropLife International
- Center for Invasive Species Management
- Bepress
- Arctic Portal Library
(Progress in Botany 62) Prof. Dr. Walter Eschrich (auth.)
(Podosphaera pannosa) and black spot (Diplocarpon rosae)
(N 2 ) into ammonia (NH 3 )
(Helianthus annuus) and Indian Mustard (Brassica juncea)