Spare Rib was a leading women’s liberation periodicals of the 1970s. You can view the full archive online via the British Library website. There are links to that archive on the Sociology https://www2.le.ac.uk/library/find/subjects/sociology and the Media and Communication https://www2.le.ac.uk/library/find/subjects/media subject pages.
Paper issues are held by the Women’s Library@LSE
The first issue cost 17.5 pence . It asked what is a feminist? And had an interview with footballer George Best plus a cookery feature where (pre microwave) you could mix up a chicken casserole in a pan with draught cider (page 36) or save time by making a banana and raw cabbage salad!