I have come across at least 5-6 times over the past few months where a problem will give a key word that would indicate what they are looking for and if I am struggling trying to interpret what they are getting at by using the CERM I open up Goswami's book and sure enough it had the needed equation in it's simplest form. For example, last night I came across a question that gave a slender column pinned at both ends and it provided I and E and asked for the Euler's force on the column. So I flipped through my EET binder, didn't find anything of use, flipped through the CERM and nothing jumped out at me as something I could use, so I went to the Index of Goswami and boom, right there in the index was "Euler force", flipped to the page, plugged and chugged and got my answer. Long story short, like John QPE said, it is just another reference to fall back on if need be.