Curtis, K.M. 1921: The significance of the development in New Zealand of the perithecia of the apple and pear black-spot organisms (Venturia inaequalis and Venturia pirina respectively). New Zealand Journal of Agriculture 23: 215-218.
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Curtis, K.M. 1921: The significance of the development in New Zealand of the perithecia of the apple and pear black-spot organisms (Venturia inaequalis and Venturia pirina respectively). New Zealand Journal of Agriculture 23: 215-218.