ScienceJohn Michels (Journalist) 1937 |
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Page 19
... plants from the cereals to the spices , beverage plants , fiber plants , wood , coal , cork , resins , turpentine , gums , dyes , oils , rubber , medicinal plants , weeds , poisonous plants and hay - fever plants . The evolutionary ...
... plants from the cereals to the spices , beverage plants , fiber plants , wood , coal , cork , resins , turpentine , gums , dyes , oils , rubber , medicinal plants , weeds , poisonous plants and hay - fever plants . The evolutionary ...
Page 145
... plant . A. E. Hitchcock and P. W. Zimmerman reported that the use of various indole and naphthalene derivatives in water solution induced root formation in a wide variety of plants , including many of commercial importance that have ...
... plant . A. E. Hitchcock and P. W. Zimmerman reported that the use of various indole and naphthalene derivatives in water solution induced root formation in a wide variety of plants , including many of commercial importance that have ...
Page 392
... plants . In each light and temperature test there were three plant groups , one group placed under the differential light treatments on September 1 ; a second group brought into the greenhouse and placed under the light treat- ments on ...
... plants . In each light and temperature test there were three plant groups , one group placed under the differential light treatments on September 1 ; a second group brought into the greenhouse and placed under the light treat- ments on ...
Contents
g sci | 105 |
MATZKE and PROFESSOR SAM F TRELEASE | 251 |
Recent Deaths and Memorials | 275 |
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