vertical through ventilation
81Mine exploration — This article is about visiting mines. For searching for minerals, see Mineral exploration. Mine exploration is a hobby in which people visit abandoned mines, quarries, and sometimes operational mines. Enthusiasts usually engage in such activities …
82Pathogenic bacteria — Clostridium tetani Bacterial infection Classification and external resources MeSH …
83syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …
84Grid plan — A simple grid plan road map (Windermere, Florida). Surveyor s plan of Salt Lake City, ci …
85Conservatory of Flowers — Golden Gate Park Conservatory U.S. National Register of Historic Places …
86List of Historic Mechanical Engineering Landmarks — The following is a list of Historic Mechanical Engineering Landmarks as designated by the American Society of Mechanical Engineers since it began the program in 1971. The designation is granted to existing artifacts or systems representing a… …
87Cessna 172 — Skyhawk Cessna 172M Role Civil utility aircraft …
88Chevrolet Caprice — 1976 Chevrolet Caprice Classic Landau Coupe Manufacturer Chevrolet (1964 1996) Holden (2011 present) Production …
89European honey bee — Taxobox name = Western honey bee ( Apis mellifera ) image caption = Honey bee approaching a Milk Thistle flowerhead regnum = Animalia phylum = Arthropoda classis = Insecta ordo = Hymenoptera subordo = Apocrita superfamilia = Apoidea familia =… …
90Escalator — For the album by Sam Gopal, see Escalator (album). Escalators in a Copenhagen Metro station, Denmark, 2007 Escalator in action, 2011 An e …
