External Efficiency Factors (Classic Reprint)

Some Factors of Dehydrater Efficiency (Classic Reprint)

Some Factors Influencing the Efficiency of Bordeaux Mixture (Classic Reprint)

Efficiency of Production of X Rays (Classic Reprint)

Form-Factors in Coniferae (Classic Reprint)

Cattle Kill-Floor Efficiency (Classic Reprint)

Periodic Variations in Efficiency (Classic Reprint)