Anon. 1954. Method of invoking working formula. / [presented by the United Kingdom]. Working paper, South Pacific Commission Session (13th: 11 - 28 October 1954: Noumea, New Caledonia). SPC13/WP1 Noumea, New Caledonia. : SPC. , 1954. 1p. https://www.spc.int/digitallibrary/get/z5aph