Weiss PB. The normal stages in the development of the South African clawed toad, Xenopus laevis. (1945) Anat. Rec. 93: 161-9. PMID 21003320
| This historic 1945 paper by Weiss described frog developmental stages.
WEISZ PB. (1945). The normal stages in the development of the South African clawed toad, Xenopus laevis. Anat. Rec. , 93, 161-9. PMID: 21003320 DOI.
Modern Notes: frog
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The Normal Stages in the Development of the South African Clawed Toad, Xenopus laevis