I want to know the answer to the following question:
In which work published in 1934 did Popper introduce his theories centered around falsifiability?
All the background I'm provided with is that "However, he ended up not publishing the two-volume work, but a condensed version of it with some new material, Logik der Forschung (The Logic of Scientific Discovery), in 1934.". Is that enough to answer the question?