Requested reference
Zhu, M. S., Tu, H. S. & Hu, J. L. (1988). The primary study of China round arachnids. Journal of Hebei Normal University (nat. Sci. Ed.) 1988: 53-60. 
-- Show included taxa
Zhu, M. S., Tu, H. S. & Hu, J. L. (1988). The primary study of China round arachnids. Journal of Hebei Normal University (nat. Sci. Ed.) 1988: 53-60. -- Show included taxa