Lillis - R Graph Essentials - New paperback or softback - X555z

Benedetto - Spectral Synthesis - New paperback or softback - X555z

Birman - Spectral Theory - New paperback or softback - X555z

Gibbons - Algorithmic Graph Theory - New paperback or softback - X555z

Durrett - Random Graph Dynamics - New paperback or softback - X555z

Bollobas - Modern Graph Theory - New paperback or softback - X555z

Helson - Spectral Theorem - New paperback or softback - X555z

Baggenstos - Graph Isomorphism Algorithms - New paperback or softback - X555z