How do you get the items?

You can't.

Whether you replace an item with a new item or a used item depends on three factors: whether you want a new or used item whether the item is still manufactured or sold whether you have enough money...

I think you might mean an "item by item search" which simply means that each item is visually acknowledged or looked at before going to the next item. When the item you need is found, the search is...

Two pennies stamped from the national mint, indistinguishable from each other.

Barium is used in certain medical tests, where the patient drinks a mixture containing barium. For example, while drinking the mixture for a "barium-swallow" test, X-Rays are taken of the patient's...