* Published 1957; 2nd edn., 1970.

† Published 1960.

* Published 1961.

† Published 1956; 2nd edn., 1967. (65 plates, 43 text figures.)

* Published 1953; 2nd edn., 1966.

† Published 1960; 2nd edn., 1969.

* Published 1959; 2nd edn., 1968. (Part I: 79 plates, with 29 in colour.)

* Published 1964; 2nd edn., 1970. (8 plates.)

† Published 1958; 2nd edn., 1969.

* Published 1953; 2nd edn., completely revised, 1968. (270 illustrations.)

† Published 1968. (50 plates, 4 text figures.)

‡ Published 1963; 2nd edn., 1970. (10 plates.)

* Published 1966.

† Published 1954; 2nd edn., revised and augmented, 1966. (13 illustrations.)

‡ Published 1954.