As I know, Nancy Ruggles works are:
- Economics (ed.), Prentice Hall 1970;
- National Income accounts and Income analysis (N. Ruggles
and Richard Ruggles), MacGrawHill, 1956;
- The design of economic account (Columbia Univ. Press, 1970);
Last, but not least, the Universita' Cattolica (Milan, Italy) has a
"Quattro studi sul problema dei costi marginali" (N. Ruggles, I.M.D.
Little, J. de Graaf, Milan, 1959).
Daniela Parisi