1. The Design and Analysis of Computer Algorithms;Aho,1974
2. Basic Techniques of Combinatorial Theory;Cohen,1978
3. Darwins Notebooks on Transmutation of Species Part I First Notebook;Darwin,1960
4. Atlas of Protein Sequence and Structure 1966;Eck,1966
5. Proc. 8th Intern. Conf. on Numerical Taxonomy,1975