and I know you're absolutely correct.
I can't read it (I had very minimal Spanish in high school - one year) but this is Camila Vallejo's blog, I bet there is some good stuff in here: http://camilavallejodowling.blogspot.com/
Martha Gimenez, retired @UColorado-Boulder, has done some writing on materialist feminism: http://www.colorado.edu/Sociology/gimenez/index.html
Some work done @Stanford - I found after a bit of searching (list of resources at the end of the article looks interesting):
A good place to situate the start of theoretical debates about women, class and work is in the intersection with Marxism and feminism. Such debates were shaped not only by academic inquiries but as questions about the relation between women's oppression and liberation and the class politics of the left, trade union and feminist movements in the late 19th and 20th centuries, particularly in the U.S., Britain and Europe. It will also be necessary to consider various philosophical approaches to the concept of work, the way that women's work and household activities are subsumed or not under this category, how the specific features of this work may or may not connect to different “ways of knowing” and different approaches to ethics, and the debate between essentialist and social constructionist approaches to differences between the sexes as a base for the sexual division of labor in most known human societies.
The relation of women as a social group to the analysis of economic class has spurred political debates within both Marxist and feminist circles as to whether women's movements challenging male domination can assume a common set of women's interests across race, ethnicity, and class. If there are no such interests, on what can a viable women's movement be based, and how can it evade promoting primarily the interests of white middle class and wealthy women? To the extent to which women do organize themselves as a political group cutting across traditional class lines, under what conditions are they a conservative influence as opposed to a progressive force for social change? If poor and working class women's issues are different than middle and upper class women's issues, how can middle class women's movements be trusted to address them? In addition to these questions, there is a set of issues related to cross-cultural comparative studies of women, work and relative power in different societies, as well as analyses of how women's work is connected to processes of globalization.
http://plato.stanford.edu/entries/feminism-class/
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