Apogee Instruments DLI-500 PAR, Daily Light Integral, and Photoperiod Meter - Full-Spectrum 400-700 nm Light Measurement Tool for Plants & Agriculture
from $495.00
M&M Cage Company - Bird Cage Light with Chew Guard - Full Spectrum LED Pet Light - Simulates Natural Environment - Safe for Destructive Chewers, Parrots etc. - No Bulbs to Change (24" Long)
from $104.95
Sentinel GPS BPC-1a PB Basic Photoperiod Controller (Plug Box)
from $59.95
Active Eye Green LED Worklight/Flashlight Light, Aelw2
from $24.69
Water Temperature and Photoperiod: effect on gonadal maturation in pacu Piaractus mesopotamicus
from $44.00
SEAOURA 24/7 Auto On/Off Aquarium Light, Programmable Led Aquarium Light with Thermometer, Fish Tank Light with Full Spectrum+7 Single Color, WRBG DIY Color, for 30-36 Inch Planted Tank, 36W
from $59.99
Photoperiod: Webster's Timeline History, 1934 - 2007
from $28.95
Autopilot APDPX2 Advanced PX2 Lighting Controller, White
from $295.00
THE PHOTOPERIOD IN SEVERAL VIETNAM VARIETIES OF RICE
from $119.70
Photoperiod in Predatory Insects
from $43.09
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