Complex sentence: The center published a series of books titled tech-science four times annually in Amharic language, and there is also a television program which is broadcast once a week for 30 minute on EBC (Ethiopian Broadcasting Corporation).
Split into simpler sentences: The center published a series of books titled tech-science four times annually in Amharic language. And there is also a television program which is broadcasted once a week for 30 minute on EBC (Ethiopian Broadcasting Corporation).