Annual field trip /
Michigan Academy of Science, Arts, and Letters and Michigan Geological Society.

APA Citation

Michigan Academy of Science, A., Michigan Geological Society. (1947). Annual field trip. [S.l.]: The Academy and Society.

MLA Citation

Michigan Academy of Science, Arts, and Letters, and Michigan Geological Society. Annual Field Trip. [S.l.]: The Academy and Society, 1947.

Warning: These citations may not always be complete (especially for serials).