1. Between the wars, esp. the two world wars

Encyclopedia: Interwar

• micropenis
• microphage
• microphallus
• microphone
• microphone boom
• family Meloidae
• family Membracidae
• family Menispermaceae
• family Menuridae
• family Menyanthaceae
• family Meropidae
• family Micrococcaceae
• family Microdesmidae
• family Microhylidae
• family Mimidae
• family Mimosaceae
• family Miridae
• family Mniaceae
• family Mobulidae
• family Molidae
• family Molossidae
• family Momotidae
• family Moniliaceae
• family Monocanthidae
• family Monodontidae