Erik Gustaf Moberg. With this apparatus animal and plant samples were taken in deep water for study. After the instrument reached the desired depth a messenger slid down the line and released the weight at the bottom. As the weight fell it actuated a rotary pump which drove water through the rubber tube which contains a mesh sack. not dated

Chicago citation style
Erik Gustaf Moberg. With this apparatus animal and plant samples were taken in deep water for study. After the instrument reached the desired depth a messenger slid down the line and released the weight at the bottom. As the weight fell it actuated a rotary pump which drove water through the rubber tube which contains a mesh sack. not dated. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb7509643k. (Accessed December 10, 2018.)
APA citation style
Erik Gustaf Moberg. With this apparatus animal and plant samples were taken in deep water for study. After the instrument reached the desired depth a messenger slid down the line and released the weight at the bottom. As the weight fell it actuated a rotary pump which drove water through the rubber tube which contains a mesh sack. not dated. Retrieved from the Digital Public Library of America, https://library.ucsd.edu/dc/object/bb7509643k
MLA citation style
Retrieved from the Digital Public Library of America <https://library.ucsd.edu/dc/object/bb7509643k>.
Note: These citations are programmatically generated and may be incomplete.