Penetrating grass seed.
Spellman
P G
PG
Spencer
J E
JE
Knox
A I
AI
D000818:Animals; D004283:Dog Diseases / Q000209:etiology*; D004285:Dogs; D005547:Foreign Bodies / Q000662:veterinary*; D008297:Male; D006109:Poaceae; D012639:Seeds; D014521:Urethra