Page 255 - Adsorption by Powders and Porous Solids
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Figure 9.4.   Standard nitrogen isotherms for carbons (a), and cowding FHH plots (b) (circles, Carrott et d., 1988a; diamonds, Voloshchuk et al., 1988,
            squares, Isidcyan and Kiselev, 1961; triangles down, Pierce, 1968; triangles up, Rdiguez-Reinoso et d., 1987). Reproduced from Cmtt and Sing (1989).
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