THE IBIS VOLUME 108
No author. Stock no 575448. Published by British Ornithologists' union. 1966.

THE IBIS VOLUME 120
No author. Stock no 575449. Published by British Ornithologists' union. 1978.

THE IBIS VOLUME 107
No author. Stock no 575450. Published by British Ornithologists' union. 1965.

THE IBIS VOLUME 105
No author. Stock no 575453. Published by British Ornithologists' union. 1963.

THE IBIS VOLUME 111
No author. Stock no 575452. Published by British Ornithologists' union. 1969.

THE IBIS VOLUME 104
No author. Stock no 575444. Published by British Ornithologists' union. 1962.

THE IBIS VOLUME 110
No author. Stock no 575460. Published by British Ornithologists' union. 1968.

THE IBIS VOLUME 117
No author. Stock no 575462. Published by British Ornithologists' union. 1975.

THE IBIS VOLUME 114
No author. Stock no 575447. Published by British Ornithologists' union. 1972.

THE IBIS VOLUME 102
No author. Stock no 575445. Published by British Ornithologists' union. 1960.

THE IBIS VOLUME 112
No author. Stock no 575459. Published by British Ornithologists' union. 1970.

THE IBIS VOLUME 103A
No author. Stock no 575457. Published by British Ornithologists' union. 1961.