subpreputial - Google Search
Research
Subpreputial wetness - Wikipedia
Accessory Glands | SEER Training
A neglected gland: a review of Cowper's gland - PubMed
Does preejaculatory penile secretion originating from Cowper's gland contain sperm? - PubMed
What Kind Of Microfilm Do I Have? Microfiche, Aperture Cards