The variation of animals and plants under domestication / By Charles Darwin.

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The variation of animals and plants under domestication / By Charles Darwin.

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Geographic variation and evolutionary relationships among broad-clawed shrews of the Cryptotis goldmani-group (Mammalia, Insectivora, Soricidae) / Neal Woodman, Robert M. Timm.

n.s. no.91(1999)

A geographic variation gradient in frogs, by Karl P. Schmidt.

v.20:no.29(1938)

Convergence and morphological constraint in frogs : variation in postcranial morphology ; a contribution in celebration of the distinguished scholarship of Robert F. Inger on the occasion of his sixty-fifth birthday / Sharon B. Emerson.

n.s. no.43(1988)

Geographic variation in the chicken turtle, Deirochelys reticularia Latreille / Albert Schwartz.

v.34:no.41(1956)

Variation in scales in Dermophis mexicanus (Amphibia, Gymnophiona) : are scales of systematic utility? / Maravalee H. Wake, Kristen M. Nygren.

n.s. no.36(1987)

Geographical variation in the canary, Serinus sulphuratus [by] Austin L. Rand.

v.51:no.8(1968)

Patterns of geographic variation in allozymes of the Olympic salamander, Rhyacotriton Olympicus (Caudata: Dicamptodontidae) : a contribution in celebration of the distinguished scholarship of Robert F. Inger on the occasion of his sixty-fifth birthday / David A. Good, Gloria Z. Wurst [and] David B. Wake.

n.s. no.32(1987)

Morphological and ecological variation in the flying lizards (Genus Draco) / Robert F. Inger.

n.s. no.18(1983)