"I have also written some poems which have not been collected in a volume"

Grazia Deledda was an Italian writer who was granted the Nobel Prize in Literature in 1926. This quote is most likely describing her body of work, that includes a number of novels, short stories, and poems. Deledda was a prolific writer, and this quote suggests that she has written poems that have not been gathered in a volume. This could suggest that the poems have actually not been published, or that they have not been put together into a single book. It could likewise mean that the poems have actually been released, however not collected into a single volume.

Deledda's quote is a testimony to her dedication to her craft. Regardless of the fact that some of her poems have not been gathered in a volume, she still considers them to be part of her body of work. This talks to her commitment to her writing and her belief in the significance of her work. It also recommends that Deledda is confident in her capability to write and create significant works of literature.