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- [2] EVACUATED REFRIGERANT CONTAINER AS A SOURCE OF VACUUM FOR AIR SAMPLING AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL, 1975, 36 (11): : 845 - 846
- [6] A VERTICAL AIR-ROOT-PRUNING CONTAINER (PATENT APPLIED FOR) OKLAHOMA AGRICULTURAL EXPERIMENT STATION RESEARCH REPORT, 1981, (NP-81): : 27 - 31