Copying any PDFs, Photos, Sounds, Graphics, Data, Cinematography, Letters, Words, Digital Codes in material or non-material forms are illegal under the Copyright Act - 2000 of Bangladesh. This Act is acceptable for internal use only. Using any material from Waste management and the green environment, highly recommended contacting the BE&B copyright office by considering the following registration here. Collecting information from here will be considered for the issue of your permission. In many cases, free cost granting will be regarded as for educators also.