With the new Impact Factors from 2018 having been published by Web of Science, a number of new journals were added to (and a few others removed from) each social science category.

From a total of 786 indexed journals, 678 journals (or 86%) deposit metadata at CrossRef. OOIR's algorithms have so far fetched papers from 651 journals (83%). Which journals are missing, and why do OOIR’s scripts fail to find their papers?