首页 / 官方藏书 / A Text-book of Entomology / Including the Anatomy, Physiology, Embryology and Metamorphoses of Insects for Use in Agricultural and Technical Schools and Colleges as Well as by the Working Entomologist / b. The silk or spinning glands, and the spinning apparatus

b. The silk or spinning glands, and the spinning apparatus

A Text-book of Entomology / Including the Anatomy, Physiology, Embryology and Metamorphoses of Insects for Use in Agricultural and Technical Schools and Colleges as Well as by the Working Entomologist · A. S. Packard · 第 28 / 57 章