** 412. 13 Free-reed instruments feature a reed which vibrates within a closely fitting slot ( there may be an attached pipe, but it should only vibrate in sympathy with the reed, and not have an effect on the pitch – instruments of this class can be distinguished from 422. 3 by the lack of finger-holes ).

** 422. 11 ( Single ) oboes.

** 422. 12 Sets of oboes.

** 422. 22 Sets of clarinets.

** 422. 31 Single pipes with free reed.

** 422. 32 Double pipes with free reeds.

** Okayama Prefectural Route 422 ( Hiruzen Kōgen )

** Okayama Prefectural Route 422 ( Hiruzen Kōgen )

** Order 2009-8-6 ( August 11, 2009 ): re-selecting Mesaba Aviation, Inc., d / b / a Delta Connection, to provide Essential Air Service ( EAS ) with Saab 340 aircraft at Devils Lake and Jamestown, North Dakota, for the two-year period of October 1, 2009, through September 30, 2011, for annual subsidy rates of $ 1, 459, 493 at Devils Lake and $ 1, 963, 220 at Jamestown ($ 3, 422, 713 annually for both points combined ).

** Order 2009-8-6 ( August 11, 2009 ): re-selecting Mesaba Aviation, Inc., d / b / a Delta Connection, to provide Essential Air Service ( EAS ) with Saab 340 aircraft at Devils Lake and Jamestown, North Dakota, for the two-year period of October 1, 2009, through September 30, 2011, for annual subsidy rates of $ 1, 459, 493 at Devils Lake and $ 1, 963, 220 at Jamestown ($ 3, 422, 713 annually for both points combined ).

** BR Class 422 buffet coaches 69310 ( ex-unit 2255 ) and 69332 ( ex-unit 2203 ).

** Eunectes murinus, the green anaconda, the largest species, is found east of the Andes in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Brazil and on the island of Trinidad.

** Eunectes notaeus, the yellow anaconda, a smaller species, is found in eastern Bolivia, southern Brazil, Paraguay and northeastern Argentina.

** Eunectes deschauenseei, the dark-spotted anaconda, is a rare species found in northeastern Brazil and coastal French Guiana.

** Eunectes beniensis, the Bolivian anaconda, the most recently defined species, is found in the Departments of Beni and Pando in Bolivia.

** Well-ordering theorem: Every set can be well-ordered.

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** Trichotomy: If two sets are given, then either they have the same cardinality, or one has a smaller cardinality than the other.

** The Cartesian product of any family of nonempty sets is nonempty.

** König's theorem: Colloquially, the sum of a sequence of cardinals is strictly less than the product of a sequence of larger cardinals.

** Every surjective function has a right inverse.

** Zorn's lemma: Every non-empty partially ordered set in which every chain ( i. e. totally ordered subset ) has an upper bound contains at least one maximal element.

** Hausdorff maximal principle: In any partially ordered set, every totally ordered subset is contained in a maximal totally ordered subset.

** Tukey's lemma: Every non-empty collection of finite character has a maximal element with respect to inclusion.

** Antichain principle: Every partially ordered set has a maximal antichain.

** Every vector space has a basis.

** Every unital ring other than the trivial ring contains a maximal ideal.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

** The closed unit ball of the dual of a normed vector space over the reals has an extreme point.

** Tychonoff's theorem stating that every product of compact topological spaces is compact.

** In the product topology, the closure of a product of subsets is equal to the product of the closures.

** If S is a set of sentences of first-order logic and B is a consistent subset of S, then B is included in a set that is maximal among consistent subsets of S. The special case where S is the set of all first-order sentences in a given signature is weaker, equivalent to the Boolean prime ideal theorem ; see the section " Weaker forms " below.

** Any union of countably many countable sets is itself countable.

** Middle Islet, 21, 200 m² land area ;

** August 21 ( Eastern Orthodox liturgics )

** April 21 ( Eastern Orthodox liturgics )

** Folio 21 recto: Ram ( Aries ) ( Isidore of Seville, Etymologiae, Book XII, i, 11 )

** Folio 21 verso: Kid ( Hedus ) ( Isidore of Seville, Etymologiae, Book XII, i, 13 )

** Folio 21 verso: Bull ( Taurus ) ( Isidore of Seville, Etymologiae, Book XII, i, 29 )

** February 21 ( Eastern Orthodox liturgics )

** Frimaire ( From French frimas, " frost "), starting 21, 22 or 23 November

** Nivôse ( from Latin nivosus, " snowy "), starting 21, 22 or 23 December

** Pluviôse ( from Latin pluvius, " rainy "), starting 20, 21 or 22 January

** Ventôse ( from Latin ventosus, " windy "), starting 19, 20 or 21 February

** Germinal ( from Latin germen, " germination "), starting 20 or 21 March

** Floréal ( from Latin flos, " flower "), starting 20 or 21 April

** Prairial ( from French prairie, " pasture "), starting 20 or 21 May

** Start: July 19, 1966, 21: 44: 00 UTC

** EUMM Georgia, from 2008 ( Georgia, South Ossetia and Abkhazia ) – 21 out of 320 soldiers from 26 countries

** International Surfing Day ( June 21 during leap years )

** June 21 ( Eastern Orthodox liturgics )

** July 21 ( Eastern Orthodox liturgics )

** May 21 ( Eastern Orthodox liturgics )

** November 21 ( Eastern Orthodox liturgics )

** Protestants 21. 3 %

** Engine number is same M28 / 21 and M28 / 22 on the high-compression 2-valve engines.

** September 21 ( Eastern Orthodox liturgics )

** a trust for a minor (" to x if she attains 21 ");