. Bulletin biologique de la France et de la Belgique. Biology; Natural history. .'«•\ ;o ^ Ujj'"'"i: 20 ,.A ;;;;^JusJ^ L/JO'. ^.^ 21 1^ ^^'0S-^ Y ^t-* ^5'^ A' ' V^, tK&- uL^-.'.-'^^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Université de Paris. Laboratoire d'evolution des êtres organisés. Montreuil [etc. ] Gauther-Villars [etc. ]

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901