Cart Remove item Thumbnail image Product Price Quantity Subtotal × Flashing Seven by Jack Hirschowitz and Ahron Friedberg $16.95 Flashing Seven by Jack Hirschowitz and Ahron Friedberg quantity $16.95 × The Developmental Lens by Gwyneth Kerr Erwin, Ph.D., Psy.D. $35.00 The Developmental Lens by Gwyneth Kerr Erwin, Ph.D., Psy.D. quantity $35.00 Update cart Cart totals Subtotal $51.95 Tax $0.00 Total $51.95 Proceed to checkout