TY - BOOK AU - Dubey Y.M. TI - Assessment of decay in trees by non destructive technique U1 - PCR 634.96 21st ed. PY - 2018/// CY - Dehradun PB - Forest research institute KW - hollowness tree detection, KW - tree testing N1 - Project report- FRI-638/FPD (TM)-103 ER -