Home › Authors › Andrew Pettigrew 👤 Andrew Pettigrew 5 books Books by Andrew Pettigrew Where Is My Grandpa? Where Is My Grandpa? 2021 Where Is My Grandpa? Anniversa Where Is My Grandpa? Anniversary Edition 2021 Discourse & Differene Discourse & Differene 2000 Understanding change in the NH Understanding change in the NHS 1988 Inter-group conflict and role Inter-group conflict and role strain 1968