Voland, Eckart; Beise, Jan - Max Planck Institute for Demographic Research, Rostock, … - 2001
On the basis of church register entries from the Krummhörn region (Ostfriesland, Germany, 1720-1874) we looked at the question whether the existence or non-existence of grandmothers had an impact on the reproductive success of a family. We found that fertility (measured by intervals between...