You're right, 学費 is a better word than the one I mis-recognized. In my defense, there is a book titled "やさしい料学", and I found a small handful of other instances through a search.
It seems like that's also a typo or scanno of 科学. Aside from the one letter, everything else about that book matches the bibliographic information of another book whose alternative title (or subtitle) is "やさしい科学": http://webcatplus.nii.ac.jp/webcatplus/details/book/isbn/978...