The full declaration is very long but an extract from the first declaration of Havana in 1960 is:
The right of the peasants to the land; the right of the workers to the fruit of their work; the right of children to education; the right of the ill to medical and hospital attention; the right of youth to work; the right of students to free, experimental, and scientific education; the right of Negroes and Indians to “the full dignity of Man;” the right of women to civil, social and political equality; the right of the aged to a secure old age; the right of intellectuals, artists, and scientists to fight, with their works, for a better world; the right of nations to their full sovereignty; the right of nations to turn fortresses into schools, and to arm their workers, their peasants, their students, their intellectuals, the Negro, the Indian, the women, the young and the old, the oppressed and exploited people, so that they may themselves defend their rights and their destinies.
You could Google the full version and also check out later declarations