C. R. "Chuck" Downing shared - Authors Bureau ECN: Speak with a favorite author by phone

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C. R. "Chuck" Downing shared: 8/30/2017 9:00:48 PM

#apbioanswers A2 Plants require proper light/dark ratio to flower: PHOTOPERIODISM Textbook excerpt -... https://t.co/xCSIXFtnle
— C.R. Downing (@CRDowningAuthor) August 31, 2017