While a PDF is searchable, many scanned versions of older De editions suffer from poor resolution in diagrams (critical for understanding tissue organization). A legitimate e-book edition (if available via platforms like KopyKitab or Google Play Books) is vastly superior.
De, K.K. (Year of edition). Plant Tissue Culture . New Central Book Agency, Kolkata. plant tissue culture book by kalyan kumar de pdf download
De’s book is the before moving to Bhojwani & Razdan. While a PDF is searchable, many scanned versions