Konkle, W. W. Providing quality environment in our communities: A public lecture series. Washington, D.C: Graduate School Press. U.S. Department of Agriculture 1968.
Παραπομπή Chicago StyleKonkle, Ward W. Providing Quality Environment in Our Communities: A Public Lecture Series. Washington, D.C: Graduate School Press. U.S. Department of Agriculture 1968.
Παραπομπή MLAKonkle, Ward W. Providing Quality Environment in Our Communities: A Public Lecture Series. Washington, D.C: Graduate School Press. U.S. Department of Agriculture 1968.
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