放牧草地の害虫および放牧牛の疾病防除に関する研究
ホウボクソウチ ノ ガイチュウ オヨビ ホウボクギュウ ノ シッペイ ボウジョ ニ カンスル ケンキュウ

The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.