APA

Johnson ML (ed.), . (1950). New Biology : What do we know about the Cause of Cancer, Canada's Premier Problem of Animal Conservation, Butterfly Migrations, Dispersal of Insects by Wind, Phosphorus Drugs and Insecticides, Male Fern, Recent Researches on Whales - 9. LONDON: PENGUIN BOOKS.

Chicago

Johnson ML (ed.), . 1950. New Biology : What do we know about the Cause of Cancer, Canada's Premier Problem of Animal Conservation, Butterfly Migrations, Dispersal of Insects by Wind, Phosphorus Drugs and Insecticides, Male Fern, Recent Researches on Whales - 9. LONDON: PENGUIN BOOKS.

Harvard

Johnson ML (ed.), . (1950). New Biology : What do we know about the Cause of Cancer, Canada's Premier Problem of Animal Conservation, Butterfly Migrations, Dispersal of Insects by Wind, Phosphorus Drugs and Insecticides, Male Fern, Recent Researches on Whales - 9. LONDON: PENGUIN BOOKS.

MLA

Johnson ML (ed.), . New Biology : What do we know about the Cause of Cancer, Canada's Premier Problem of Animal Conservation, Butterfly Migrations, Dispersal of Insects by Wind, Phosphorus Drugs and Insecticides, Male Fern, Recent Researches on Whales - 9. LONDON: PENGUIN BOOKS. 1950.