Dyfyniad APA

Topping,J. (1955). Errors of observation and their treatment (4.). Chapman.

Dyfyniad Arddull Chicago

Topping,J. Errors of Observation and Their Treatment. 4. London: Chapman, 1955.

Dyfyniad MLA

Topping,J. Errors of Observation and Their Treatment. 4. Chapman, 1955.

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