Cornell, J. B. (1989). Sharing the joy of nature: Nature activities for all ages. Nevada City: Dawn publications.
Styl ChicagoCornell, Joseph Bharat. Sharing the Joy of Nature: Nature Activities for All Ages. Nevada City: Dawn publications, 1989.
Citace podle MLACornell, Joseph Bharat. Sharing the Joy of Nature: Nature Activities for All Ages. Nevada City: Dawn publications, 1989.
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