Author: GERMERAAD, J.M. & J. MULLER
Title: A computer-based numerical coding system for the description of pollen grains and spores. I. General, II. Appendix. [2 vols.]
Description: ca. 1974. Leiden, Nat. Mus. Geol. Miner. Un-paginated, numerous figs. In 2 ringbinders, part I lacks title page (?), very good, lg4to.

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