Sökning: "Per-Erik Johanson"
Hittade 2 avhandlingar innehållade orden Per-Erik Johanson.
1. Improvements in hip arthroplasty - did they work? Evaluations of different articulations and fixation concepts
Sammanfattning : Today, total hip arthroplasty (THA) is one of the safest and most efficient surgical treatments. New materials, surgical techniques and design concepts intended to improve THA have not always been successful. LÄS MER
2. Morphology, Taxonomy and Interrelationships of Tristichopterid Fishes (Sarcopterygii, Tetrapodomorpha)
Sammanfattning : Tristichopterids (Sarcopterygii, Tetrapodomorpha) form a monophyletic group of exclusively Devonian fishes. This thesis consists of descriptions of new material of tristichopterids and closely related taxa, as well as new interpretations and descriptions of previously figured material. LÄS MER
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