1965 92 p., 38 pls, roy. 4to, paperbound. Text in English and Spanish.
1954 16 p., 6 tables, 3 pls, roy. 4to, paperbound.
1975 [2], 52, [2] p., 4to, paperbound. Ex library Dr. H.W.J. van Amerom.
1954 16 p., 6 tables, 3 pls, roy. 4to, paperbound. Ex library Dr. H.W.J. van Amerom.
1966 13 p., 5 pls, large 4to, paperbound. Library stamp.