Out of PhasePaul M. Feeney, Alex Woolf, J. D. Waye, P.N. Roberts, B. David Spicer, DJ Tyrer, Richard Farren Barber, Matthew Smallwood, Rivka Jacobs, Sergio Palumbo · First published 2015Open the Tome
The separation of Betula populifolia and Betula pendula and their status in OntarioPaul M. Catling, K. W. Spicer · First published 1988Open the Tome
