Revision and extension of ..."Haupt-exponents, residue-indices, primitive roots and standard congruences", by Lt.-Col. Allan Cunningham, H.J. Woodall and T.G. Creak (London: Hodgson, 1922)'- Book jacket.
Royal Society mathematical tables. Vol.9, Tables of indeces and primitive roots by Royal Society. Published by Published for the Royal Society at Cambridge U.P in 1968. Publication and catalogue information, links to buy online and reader comments.