Phillips, Mary E. creator Cox, Lucy E. joint author. text essay ua London Univ. of London c1936 1936 monographic g

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223 p. : illus. ; 26 cm. Mary E. Phillips, Lucy E. Cox. Includes Index. Biology QH308 .W434 574 PHG 55010416 DLC 821217 20141203151656.0 8861454