Radcliffe Publishing Ltd.  ( 10 Titles / 2,206 Abstracts )
Reed Business Information  ( 37 Titles / 6,583 Abstracts )
Rodman Publishing  ( 11 Titles / 2,604 Abstracts )
Rodopi  ( 32 Titles / 1,744 Abstracts )
Rogers Publications  ( 10 Titles / 13,517 Abstracts )
Royal Irish Academy  ( 9 Titles / 523 Abstracts )
Royal Society of Chemistry  ( 6 Titles / 1,168 Abstracts )
Royal Society of Medicine Press  ( 15 Titles / 15,420 Abstracts )
Rutgers University  ( 5 Titles / 89 Abstracts )