All details must be clearly readable and visible when the figures are reduced for printing. Each figure must be numbered and cited in numerical order of appearence in the text. The name of the author and the figure number must be written on the back of all the figures or on the edges of figures using soft pencil. All the details on the figures should be carefully examined because any errors found in galley proof stage must be corrected by the author at author's expenses. Each figure caption must be typewritten on a separate sheet.
Authors can imitate follov ing examples.
Margules et al. References cited should be fully listed at the end of the manuscript in alphabetical order. 668, Longman, London. 410, D. Reidel Publishing Co., Dordrecht, 99-113. Referring to papers with the same author, the sequence should be chronological.