पंजाब भूमि राजस्व अधिनियम, 1887 की धारा 19 ______ से संबंधित है।

Under the Punjab Land Revenue Act, 1887, the Collector shall cause to be prepared by the ______________ of each estate an edition of the record-of-rights.

Which of the following is NOT classified as a distinct class of Revenue Officers under Section 6 of the Punjab Land Revenue Act, 1887?