00547nam a2200193Ia 450000500170000000800410001702000220005804100080008008200190008810000140010724500650012125000120018626000330019830000090023150000300024050100180027065000280028870000370031620260109141519.0230125s9999    xx            000 0 und d  a978-0-143-42752-0  aeng  a158.1bSIN/ETC  aSinghal A  aHow to Improve Concentration By Guiness World Record Holders  a1st Ed.  c2020bPenguin booksaHaryana  a224p  aPersonality Development 
  aConcentration  aPersonality Development  aSinghal A; Singhal S & Kishore B