Plant diseases in orchard, nursery, and garden crops

MLA

Gram, Ernst. and Anna Weber. Plant diseases in orchard, nursery, and garden crops. London : Macdonald, [1952]

APA

Gram, E. & Weber, A. (1952). Plant diseases in orchard, nursery, and garden crops. London : Macdonald.

Chicago

Gram, Ernst. and Anna Weber. Plant diseases in orchard, nursery, and garden crops. London : Macdonald, [1952]