Lukes' Dimensions of Power

[peppapig]

Does anyone have an electronic copy of this essay or know where I can get hold of an ebook (1974 or 2nd edition)?

Lukes, S. (1974) Power: A Radical View London: Macmillan

Alternatively something he's written that is electronically available and covers the 3 dimensions of power?

Thank you so much

mawgenb at gmail.com