Many bonds have minimums imposed by the bond or the dealer. The yield is the rate of return received from investing in the bond. However, certain glasses will typically bond only to certain metals. This type of bond is much stronger than a "normal" hydrogen bond. It is as important as with the perpends to bond these leaves together. Langmuir subsequently introduced the term "covalent bond". Glycolipids are lipids with a carbohydrate attached by a glycosidic (covalent) bond. This is due to the mechanism of this type of bond. The term "covalent bond" dates from 1939. Ford created a part for the recovering Ward Bond, who needed money. A water molecule is released during formation of each amide bond. Metallic copper does not bond well to glass. Often they bond strongly to a single person. The term "corporate bond" is not strictly defined. Both are aware of a growing bond between them in their bereavement.