008950724s1973 us 000a eng
■00519950724144435
■056 ▼a508▼23
■090 ▼a508▼bA855▼c528
■1001 ▼aAmerican Society for Testing and Materials
■24510▼aBiological Methods for the Assessment of Water Quality▼dAmerican Society for Testing and ▼eMaterials
■260 ▼aPhiladelphia▼bASTM▼c1973
■300 ▼a256p.▼c24cm
■44000▼aASTM Special Technical Publication ▼v528