David Heron

On the Relation of Fertility in man to Social Status, and on the Changes in This Relation That Have Taken Place During the Last Fifty Years  David Heron Hardback. Legare Street Press, 2023-07-18 ISBN 9781021152190     On the Relation of Fertility in man to Social Status, and on the Changes in This Relation That Have Taken Place During the Last Fifty Years  David Heron Paperback. Legare Street Press, 2023-07-18 ISBN 9781022738676     The Influence of Defective Physique and Unfavourable Home Environment on the Intelligence of School  David Heron Paperback. Wentworth Press, 2019-03-07 ISBN 9780530390710     The Influence of Defective Physique and Unfavourable Home Environment on the Intelligence of School  David Heron Hardback. Wentworth Press, 2019-03-07 ISBN 9780530390727     A Prelminary Study of Extreme  Karl Pearson Amy Barrington David Heron Paperback. Wentworth Press, 2019-03-12 ISBN 9781010003748     A Prelminary Study of Extreme  Karl Pearson Amy Barrington David Heron Hardback. Wentworth Press, 2019-03-12 ISBN 9781010003755     A First Study of the Statistics of Insanity and the Inheritance of the Insane Diathesis  David Heron Hardback. Palala Press, 2016-05-24 ISBN 9781359376046     Kinsmen  David Heron Hardback. Palala Press, 2016-05-20 ISBN 9781357903176     On the Relation of Fertility in Man to Social Status, and on the Changes in This Relation That Have Taken Place During the Last Fifty Years (Classic Reprint)  David Heron Paperback. Forgotten Books, 2016-12-06 ISBN 9781334543159     A Prelminary Study of Extreme  Karl Pearson Amy Barrington David Heron Hardback. Palala Press, 2016-05-16 ISBN 9781356715589