Say if your Epic has label XXXX and you query for labels = XXXX, then you will only get the Epic. Using the Epic key, you will have to write another query to find issues that are child of Epic. Alternatively, you can look at Third party marketplace apps if they fit your requirement...
FINAT Intl. Congress to tackle label issues.(Brief Article)
Thomas B. Edsall
Labelmaster issues bigger catalog for 2006.
Retailers push private label.(Industry Issues)
the glass bottle is still the container of choice for most producers and consumers.You can close it with a cork, a synthetic, or a screwcap, and you could screen print it or etch it, but most likely, you will opt to apply a label on the front and/or back, Continuing advances in ...
More foods can carry 'healthy' label - FDA issues new rules on canned and frozen fruits and vegetables, as well as certain cereal-grain products - Brief Article
Private label growth continues.(Industry Issues)(Brief Article)
Dean's private label dairy products shifted. (Industry Issues).