The links below support a variety of search strategies for retrieving materials of interest from PPP’s extensive contents
Unless you already know what you are looking for however, the Johns Hopkins Index is less easy to search because it gives only volume and issue numbers.
If you are starting from scratch, you may find it helpful to use PPP Searchable Index to identify materials of interest, and then move to the Johns Hopkins Index to purchase them
Note: many academic institutions subscribe to Johns’ Hopkins Project Muse – a subscription to Project Muse allows free download of all PPP materials
The following links take you to the two indexes described above