# Studies on the phylloplane microflora of unsprayed 'Dougherty' apple trees

> 1974 doctoral thesis by Shaun Ross Pennycook at University of Auckland

**Wikidata**: [Q112118470](https://www.wikidata.org/wiki/Q112118470)  
**Source**: https://4ort.xyz/entity/studies-on-the-phylloplane-microflora-of-unsprayed-dougherty-apple-trees