APA-referens (7:e uppl.)

(1971). An introduction to the grading and measurement of hardwood lumber / [National Hardwood Lumber Association].

Chicago-referens (17:e uppl.)

An Introduction to the Grading and Measurement of Hardwood Lumber / [National Hardwood Lumber Association]. 1971.

MLA-referens (9:e uppl.)

An Introduction to the Grading and Measurement of Hardwood Lumber / [National Hardwood Lumber Association]. 1971.

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