Research aids christmas tree industry
Hilgardia 31(12):10-11. DOI:10.3733/ca.v031n12p10. December 1977.
The production and marketing of Christmas trees in California can be described as a “growth” industry in more ways than one.
. 1977. Research aids christmas tree industry. Hilgardia 31(12):10-11. DOI:10.3733/ca.v031n12p10
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