https://digitalcommons.usu.edu/etd_biology/222/
"A Cytological Study of Spermatogenisis in Anasa tristis (De Geer)" by Eldon J. Gardner
This study has included the collecting of specimens, preparation of the material for microscopic examination and the tracing of the process of spermatogenesis...
anasa tristisde geercytologicalstudyspermatogenisis