The first mandibular molar

The first Permanent molar

The second mesiobuccal canal of maxillary first molar

a thousand-li journey begins with the first step

Act Governing Replacement of Any Vacant Seat of the First Term National Assembly

action of the first impression

adult of the first form

Age of the first spermatorrhea

at the first class section

blocks of the first order

Blood pressure at the first visit

Boll on the first stem node

burst fracture of the first lumbar vertebra

Contractures of the first web space

critical load of the first load transfer load

discomforts in the first trimester

Effect of the first injection

erected as simple-supporting beam in the first stage

first-aid of the first aid