Complex sentence: Evans-Wentz credited himself only as the compiler and editor of these volumes; the actual translation was performed by Tibetan Buddhists, primarily Lama Kazi Dawa-Samdup.
Split into simpler sentences: Evans-Wentz credited himself only as the compiler and editor of these volumes. The actual translation of the texts was performed by Tibetan Buddhists, primarily Lama Kazi Dawa-Samdup.