Stratum series
Macmillan
edited by Roger Highfield ; translated [from the Spanish] by Frances M. López-Morillas
Macmillan 1972 Stratum series
Available at 8 libraries
edited by Gerald Strauss
Available at 13 libraries
edited by Henry J. Cohn
Macmillan 1971 Stratum series
Available at 23 libraries
edited by P. S. Lewis; translated from the French by G. F. Martin
Available at 10 libraries
edited by Eric Cochrane
Macmillan 1970 Stratum series
Available at 9 libraries
edited by Werner L. Gundersheimer
Macmillan [c1969] Stratum series
Available at 11 libraries