Hi,

The JCR which is a part of the WoS has the IF of journals of previous years.If you access JCR , on the left side you have a list of categories, you could enter the journal's name and get the IF.

Here is an example from the health sciences:

2017 journal performance data for: HEALTH

2017Journal Impact Factor & percentile rank in category for:HEALTH

1.413

2017 IF

2013 =1.324

2014= 1.310

2015= 1.110

2016 =1.986

2017 -1.413

PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

SOCIAL SCIENCES, BIOMEDICAL

Many thanks for your answers, César and Avishag

Both were very useful to me.

And from your link, César, I just got what I want in particular. Muchas gracias!