Given a sentence in Igbo language, translate the sentence to English language keeping the meaning of the original sentence intact
Q: Igbo sentence: Maka nlezianya kachasi mma nke gwugw na nyocha nke ubi, lee isi 12 nke Gerber and Green (2012) .
A:
For an excellent overview of heterogeneity of treatment effects in field experiments, see chapter 12 of Gerber and Green (2012) .