uninterrupted manufacture
71Monroe County, Michigan — Seal …
72History of the tank — This article is about the history of the tank.The prehistory of the tank [ thumb|right|Recreation of an armoured vehicle designed by Leonardo da Vinci at the Château d Amboise] The problem of advancing to attack while under fire is as old as… …
73Diaphragm (contraceptive) — Diaphragm 1: bladder, 2: pubic bone, 3: urethra, 4: vagina, 5: uterus, 6: fornix, 7: cervix, 8: diaphragm, 9: rectum Background …
74Oil palm — African Oil Palm (Elaeis guineensis) Scientific classification Kingdom: Plantae …
75Olusegun Obasanjo — Olusẹgun Ọbasanjọ 12th President of Nigeria In office 29 May 1999 – 29 May 2007 Vice President …
76Wire recording — A Peirce 55 B dictation wire recorder from 1945 …
77Occupation of the Baltic states — Part of a series of articles on the Occupation and annexation of the Baltic states …
78History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… …
79Residual-current device — A two pole residual current device A Residual Current Device is a generic term covering both RCCBs and RCBOs. A Residual Current Circuit Breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the… …
80P-n junction — A p n junction is a junction formed by combining P type and N type semiconductors together in very close contact. The term junction refers to the region where the two regions of the semiconductor meet. It can be thought of as the border region… …
