http://www.plantgateway.com/ Content Type OA ? PCA ? Books (Back List, Front List) No Yes Request a holdings comparison Portico provides a free holdings comparison service to compare a library’s journal or book holdings to the Portico archive. Search titles and ISSNs by keyword: Show: E-Books All0-9ABCDEFGHIJKLMNOPQRSTUVWXYZ Titles (2) Information The Gymnosperms Handbook Author/Editor: Byng, J.W The Flowering Plants Handbook Author/Editor: Byng, J.W