carbon to nitrogen ratio
Applying ratios of Nitrogen to potassium
Contribution ratio to Hydrocarbon-generating
controlled nitrogen ratio
digestible nitrogen ratio
mass ratio of carbon to nitrogen
nitrogen to nicotine ratio
ratio of carbon to nitrogen
ratio of nitrogen to phosphorous
ratio of potassium to chlorine
Ratio of salivary sodium to potassium
Ratio of sugar to nitrogen
Ratio of total nitrogen to nicotine
the ratio to bacillus and coccus
the transfer ratio to particulate phase of mainstr
Carbon to nitrogen ratios
Proportion of nitrogen to nicotine